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Low level ESP ram functions into Apple2Idiot arduino library

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This commit is contained in:
Nathanial Hendler 2021-09-03 20:12:18 -07:00
parent a93d5e7ef2
commit 467a7472d2
9 changed files with 1312 additions and 285 deletions
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476
examples/foo/weather.ino Normal file
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/*
blah blah blah
*/
#define DEBUG true
// Load Wi-Fi library
#include <WiFi.h>
#include <ArduinoJson.h>
/**************/
/* ESP32 Pins */
/**************/
/* DATA BUS (numbers mean GPIO port) */
#define D0R 12
#define D1R 13
#define D2R 14
#define D3R 15
#define D4R 16
#define D5R 17
#define D6R 18
#define D7R 19
//byte data_pins[] = {D0R, D1R, D2R, D3R, D4R, D5R, D6R, D7R};
byte data_pins[] = {D7R, D6R, D5R, D4R, D3R, D2R, D1R, D0R}; // That's the way the Apple II likes it.
#define DATA_BUS_SIZE 8
/* Address Bus */
#define A0R 21
#define A1R 22
#define A2R 23
#define A3R 25
#define A4R 26
#define A5R 27
#define A6R 32
#define A7R 33
byte address_pins[] = {A0R, A1R, A2R, A3R, A4R, A5R, A6R, A7R};
#define ADDRESS_BUS_SIZE 8
/* IDT7132S dual port ram chip enable */
#define RW_PIN 5
#define RW_WRITE LOW
#define RW_READ HIGH
#define INPUT_35 35
#define INPUT_34 34
//unsigned int data_byte = 0;
// fisrt bit is a flag for if the data is from Apple or from ESP32.
// /
// / last bit is a flag for "more data waiting to be sent".
// / /
#define COMMAND_FROM_APPLE 0 // 0_______
#define COMMAND_FROM_ESP 128 // 1_______
#define COMMAND_MORE_DATA_WAITING 1 // _0000001
#define COMMAND_NO_DATA_WAITING 0 // _0000001
#define COMMAND_GENERIC_MESSAGE 2 // _000001_
#define COMMAND_FETCH_WEATHER 4 // _000010_
#define COMMAND_SEND_LONG_STRING 12 // _000110_
#define COMMAND_FORMAT_RAM 126 // _111111_
#define ETX 3 // ASCII "End of Text" (ETX) character
/************/
/* Interupt */
/************/
/* Variables shared between ISR and main code need to be volatile */
volatile bool isr_handled = false;
volatile uint32_t raw_register_read;
volatile uint16_t raw_register1_read;
/**********************/
/* WiFi and Webserver */
/**********************/
// Replace with your network credentials
const char* wifi_ssid = "GSO";
//const char* wifi_ssid = "Pixel_8985";
const char* wifi_password = "xerxes27";
AsyncWebServer web_server(80);
//WebServer web_server(80);
/*******************/
/* Weather Service */
/*******************/
const String weather_service_api_key= "0ab97bbbea58592d7c9d64067a34d2d0";
const String weather_url = "http://api.openweathermap.org/data/2.5/weather?";
/*********/
/* Misc. */
/*********/
const long readLoopInterval = 10000; // millis
unsigned long lastReadLoopTime = 0;
//byte ram[ADDRESS_BUS_SIZE];
//byte ram[256];
byte ram[256];
volatile byte ram_busy=0;
//const unsigned int RAM_BUSY=666;
#define RAM_BUSY 666
/*################################################
# ISR #
################################################*/
void IRAM_ATTR isrDEVSEL(void) {
raw_register_read = REG_READ(GPIO_IN_REG);
raw_register1_read = REG_READ(GPIO_IN1_REG);
isr_handled = true;
}
/*################################################
# Functions #
################################################*/
boolean set_address(int address) {
if (ram_busy) {
Serial.println("BUSY");
return false;
}
ram_busy = true;
//Serial.print(" Setting address (");
//Serial.print(address);
//Serial.println(")");
//delay(20);
Serial.print(" A:");
for (byte i=0; i<ADDRESS_BUS_SIZE; i++) {
//for (byte i=ADDRESS_BUS_SIZE; i>0; i--) {
byte state = bitRead(address, i);
digitalWrite(address_pins[i], state);
Serial.print(state);
}
Serial.println();
return true;
}
unsigned int read_data(int address) {
Serial.print("READ: ");
Serial.println(address);
byte data_bus_read = 0;
if (set_address(address)) {
digitalWrite(RW_PIN, RW_READ); // Should already be set to RW_READ, but just in case.
Serial.print(" D:");
for (byte i=0; i<DATA_BUS_SIZE; i++) {
byte pin_state = digitalRead(data_pins[i]);
data_bus_read += pin_state * pow(2,i);
Serial.print(pin_state);
}
Serial.println();
ram_busy = false;
return data_bus_read;
} else {
return RAM_BUSY;
}
}
//signed int convert_to_signed_byte(byte byte_to_convert) {
//if (abs(requested_byte_to_write) > 127) {
//if (requested_byte_to_write < 0) {
boolean write_data(byte address, byte byte_to_write) {
Serial.print("WRITE: ");
Serial.print(byte_to_write);
Serial.print(" -> ");
Serial.println(address);
if (set_address(address)) {
//set_address(address);
Serial.print(" D:");
for (byte i=0; i<DATA_BUS_SIZE; i++) {
byte bit_to_write = (byte_to_write >> i) & 0b00000001;
pinMode(data_pins[i], OUTPUT);
digitalWrite(data_pins[i], bit_to_write);
Serial.print(bit_to_write);
}
Serial.println();
digitalWrite(RW_PIN, RW_WRITE);
delay(1);
digitalWrite(RW_PIN, RW_READ);
for (byte i=0; i<DATA_BUS_SIZE; i++) {
pinMode(data_pins[i], INPUT);
}
ram_busy = false;
return true;
} else {
return false;
}
}
void store_ip_to_ram(byte offset) {
IPAddress ip_address = WiFi.localIP();
//for (int i=0; i < ADDRESS_BUS_SIZE; i++) {
for (int i=0; i < 4; i++) {
write_data(i+offset, ip_address[i]);
}
}
void send_string_to_apple(String string_to_send, byte command_message) {
if (string_to_send.length() > 15 - 1) { // - 1 because of null character at end of string.
} else {
int c=0;
for (c=0; c < string_to_send.length(); c++) {
write_data(c, string_to_send[c]);
}
write_data(c+1, ETX);
write_data(15, COMMAND_FROM_ESP + command_message + COMMAND_NO_DATA_WAITING);
}
}
void fetch_weather(char* city_name) {
HTTPClient http;
//http.begin(String(weather_url) + "?q=Tucson,us&APPID=" + String(weather_service_api_key));
const String request_url = weather_url + "q=Tucson,us&APPID=" + weather_service_api_key;
Serial.println(request_url);
http.begin(request_url);
int httpCode = http.GET(); //Make the request
delay(10);
if (httpCode > 0) { //Check for the returning code
String payload = http.getString();
//Serial.println(httpCode);
Serial.println("++++++++++++++++++++++++");
Serial.println(payload);
Serial.println("++++++++++++++++++++++++");
StaticJsonDocument<200> filter;
filter["weather"][0]["main"] = true;
filter["weather"][0]["description"] = true;
filter["main"]["humidity"] = true;
filter["main"]["temp"] = true;
filter["wind"]["speed"] = true;
filter["wind"]["deg"] = true;
StaticJsonDocument<400> doc;
DeserializationError error = deserializeJson(doc, payload, DeserializationOption::Filter(filter));
//DeserializationError error = deserializeJson(doc, payload);
if (error) {
Serial.print(F("deserializeJson() failed: "));
Serial.println(error.f_str());
} else {
//const char* main = doc["main"];
Serial.println("----------------------");
serializeJsonPretty(doc, Serial);
Serial.println("----------------------");
serializeJsonPretty(doc["wind"], Serial);
Serial.println("----------------------");
int temp = doc["main"]["humidity"];
int humidity = doc["main"]["humidity"];
float wind_speed = doc["wind"]["speed"];
int wind_deg = doc["wind"]["speed"];
String weather_description = doc["weather"][0]["description"];
write_data(0, round(temp-273.15));
write_data(1, round(humidity));
write_data(2, round(wind_deg/10)); // divide by twn because 360 is too big for 8 bits
write_data(3, round(wind_speed));
}
}
else {
Serial.println("Error on HTTP request");
}
http.end(); //Free the resources
}
void read_ram() {
//for (int i=0; i < 16; i++) {
for (int i=0; i < 256; i++) {
unsigned int foo = read_data(i);
ram[i] = foo;
}
}
String html_template_processor(const String& var) {
Serial.println("html_template_processor()");
String return_string = "";
if (var == "RAM_TABLE") {
read_ram();
//for (int i=0; i < 16; i++) {
for (int i=0; i < 256; i++) {
return_string += "<tr><td>"+String(i)+"</td><td>" + String(ram[i]) + "</td></tr>\n";
}
return return_string;
}
return var;
}
void www_weather(AsyncWebServerRequest *request) {
fetch_weather("Tucson");
request->send(SPIFFS, "/ram.htm", String(), false, html_template_processor);
}
void www_root(AsyncWebServerRequest *request) {
request->send(SPIFFS, "/index.htm", String(), false, html_template_processor);
}
void www_ram(AsyncWebServerRequest *request) {
request->send(SPIFFS, "/ram.htm", String(), false, html_template_processor);
}
void www_write_byte(AsyncWebServerRequest *request) {
Serial.println("www_write_byte()");
String address;
String data_byte;
if (request->hasParam("address")) {
address = request->getParam("address")->value();
//Serial.println("Found address: "+address);
if (request->hasParam("data")) {
data_byte = request->getParam("data")->value();
//Serial.println("Found data: "+data_byte);
write_data(address.toInt(), data_byte.toInt());
}
}
request->send(SPIFFS, "/ram.htm", String(), false, html_template_processor);
}
void www_css(AsyncWebServerRequest *request) {
request->send(SPIFFS, "/a2i.css", "text/css");
}
void prefill_ram_with_pattern_data() {
write_data(15, 0); // notify Apple IIe we are done processing command byte
write_data(14, 123); // notify Apple IIe we are done processing command byte
write_data(13, 1); // notify Apple IIe we are done processing command byte
write_data(12, 123); // notify Apple IIe we are done processing command byte
write_data(11, 2); // notify Apple IIe we are done processing command byte
write_data(10, 123); // notify Apple IIe we are done processing command byte
write_data(9, 3); // notify Apple IIe we are done processing command byte
write_data(8, 123); // notify Apple IIe we are done processing command byte
write_data(7, 4); // notify Apple IIe we are done processing command byte
write_data(6, 123); // notify Apple IIe we are done processing command byte
write_data(5, 5); // notify Apple IIe we are done processing command byte
write_data(4, 123); // notify Apple IIe we are done processing command byte
write_data(3, 6); // notify Apple IIe we are done processing command byte
write_data(2, 123); // notify Apple IIe we are done processing command byte
write_data(1, 7); // notify Apple IIe we are done processing command byte
write_data(0, 123); // notify Apple IIe we are done processing command byte
}
/*################################################
# Setup #
################################################*/
void setup() {
/* Configure ESP32 Pins */
pinMode(A0R, OUTPUT); digitalWrite(A0R, LOW);
pinMode(A1R, OUTPUT); digitalWrite(A1R, LOW);
pinMode(A2R, OUTPUT); digitalWrite(A2R, LOW);
pinMode(A3R, OUTPUT); digitalWrite(A3R, LOW);
pinMode(A4R, OUTPUT); digitalWrite(A4R, LOW);
pinMode(A5R, OUTPUT); digitalWrite(A5R, LOW);
pinMode(A6R, OUTPUT); digitalWrite(A6R, LOW);
pinMode(A7R, OUTPUT); digitalWrite(A7R, LOW);
pinMode(D0R, INPUT);
pinMode(D1R, INPUT);
pinMode(D2R, INPUT);
pinMode(D3R, INPUT);
pinMode(D4R, INPUT);
pinMode(D5R, INPUT);
pinMode(D6R, INPUT);
pinMode(D7R, INPUT);
pinMode(RW_PIN, OUTPUT); digitalWrite(RW_PIN, RW_READ);
pinMode(INPUT_34, INPUT);
pinMode(INPUT_35, INPUT);
delay(10);
//wifi_scan();
/* Connect to wifi */
Serial.begin(115200);
Serial.println("");
Serial.println("Starting wifi...");
Serial.print(" connecting to: ");
Serial.println(wifi_ssid);
WiFi.begin(wifi_ssid, wifi_password);
while (WiFi.status() != WL_CONNECTED) {
delay(900);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected successfully");
Serial.print("Got IP: ");
Serial.println(WiFi.localIP()); //Show ESP32 IP on serial
prefill_ram_with_pattern_data();
store_ip_to_ram(0);
//store_ip_to_ram(4);
/* Start webserver */
if(!SPIFFS.begin()){
Serial.println("An Error has occurred while mounting SPIFFS");
}
web_server.on("/", HTTP_GET, www_root);
web_server.on("/a2i.css", HTTP_GET, www_css);
web_server.on("/ram", HTTP_GET, www_ram);
web_server.on("/write_byte", HTTP_GET, www_write_byte);
web_server.on("/weather", HTTP_GET, www_weather);
web_server.on("/heap", HTTP_GET, [](AsyncWebServerRequest *request){
request->send(200, "text/plain", "Free Heap: " + String(ESP.getFreeHeap()) + " bytes.");
});
//web_server.on("/hello", HTTP_GET, [](AsyncWebServerRequest *request){
//request->send(200, "text/plain", "Hello World");
//});
//web_server.on("/", www_root);
web_server.begin();
Serial.println("HTTP server started");
delay(10);
/* Display file system contents */
Serial.println("-----------------------------------------");
File root_filesystem = SPIFFS.open("/");
File f = root_filesystem.openNextFile();
while(f){
Serial.print("FILE: ");
Serial.println(f.name());
f = root_filesystem.openNextFile();
}
Serial.println("-----------------------------------------");
//attachInterrupt(DEVSEL_PIN, isrDEVSEL, LOW);
}
/*################################################
# Main #
################################################*/
void loop() {
//if (isr_handled) {
//data_byte = raw_register_read >> 12 & 0b00000000000011111111;
//isr_handled = false;
//}
if ((millis() - lastReadLoopTime) > readLoopInterval) {
//Serial.println("+++");
unsigned int command_byte = read_data(15);
if (command_byte == RAM_BUSY) {
Serial.println("Command Read: RAM BUSY");
}
else if (command_byte < COMMAND_FROM_ESP) {
// command came from apple (or webform).
Serial.print("Command Read: ");
Serial.println(command_byte);
//write_data(15, 1); // notify Apple IIe we are processing command byte
switch(command_byte) {
case COMMAND_FETCH_WEATHER:
Serial.println("Fetch Weather");
fetch_weather("Tucson");
break;
case COMMAND_SEND_LONG_STRING:
//send_string_to_apple("This is a long string", COMMAND_GENERIC_MESSAGE);
send_string_to_apple("ABCDE", COMMAND_GENERIC_MESSAGE);
case COMMAND_FORMAT_RAM:
Serial.println("Calling prefill_ram_with_pattern_data()");
prefill_ram_with_pattern_data();
write_data(15, 0); // notify Apple IIe we are done processing command byte
break;
}
/*
byte c = 0;
while (ram_busy && (c < 10)) {
delay(10);
c = c+1;
Serial.print("_");
}
Serial.println("^^^^");
write_data(15, 0); // notify Apple IIe we are done processing command byte
read_data(15); // notify Apple IIe we are done processing command byte
*/
}
lastReadLoopTime = millis();
}
}

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examples/template/template.ino Normal file
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@ -0,0 +1,22 @@
/*
Use this program with the Apple2idIOT card and the basic programs RRAM, WRAM and CMDROT to read/write and rot13
a single string contained within the dual port ram on the card.
*/
// Load Wi-Fi library
#include <WiFi.h>
#include <Apple2Idiot.h>
Apple2Idiot a2i = Apple2Idiot();
void setup() {
Serial.begin(115200);
a2i.init();
}
void loop() {
}

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examples/weather/weather.ino
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@ -1,12 +1,22 @@
/*
blah blah blah
Use this program with the Apple2idIOT card and the basic programs RRAM, WRAM and CMDROT to read/write and rot13
a single string contained within the dual port ram on the card.
*/
#define DEBUG true
// Load Wi-Fi library
#include <WiFi.h>
#include <ArduinoJson.h>
/**********************/
/* Default WiFi */
/**********************/
// Replace with your network credentials
const char* wifi_ssid = "ella";
const char* wifi_password = "";
/**************/
/* ESP32 Pins */
@ -21,8 +31,7 @@ blah blah blah
#define D5R 17
#define D6R 18
#define D7R 19
//byte data_pins[] = {D0R, D1R, D2R, D3R, D4R, D5R, D6R, D7R};
byte data_pins[] = {D7R, D6R, D5R, D4R, D3R, D2R, D1R, D0R}; // That's the way the Apple II likes it.
byte data_pins[] = {D7R, D6R, D5R, D4R, D3R, D2R, D1R, D0R};
#define DATA_BUS_SIZE 8
/* Address Bus */
@ -36,6 +45,15 @@ byte data_pins[] = {D7R, D6R, D5R, D4R, D3R, D2R, D1R, D0R}; // That's the way
#define A7R 33
byte address_pins[] = {A0R, A1R, A2R, A3R, A4R, A5R, A6R, A7R};
#define ADDRESS_BUS_SIZE 8
#define ESP_COMMAND_ADDRESS 0
#define APPLE_COMMAND_ADDRESS 1
#define SHARED_RAM_START_ADDRESS 2
#define RAM_BUSY 666
#define MAX_STR_LEN 44 // arbitrary length.
#define COMMAND_GENERIC 0b10000000
#define COMMAND_SCAN_WIFI 111
#define COMMAND_CONNECT 112
/* IDT7132S dual port ram chip enable */
#define RW_PIN 5
@ -45,121 +63,59 @@ byte address_pins[] = {A0R, A1R, A2R, A3R, A4R, A5R, A6R, A7R};
#define INPUT_35 35
#define INPUT_34 34
//unsigned int data_byte = 0;
// fisrt bit is a flag for if the data is from Apple or from ESP32.
// /
// / last bit is a flag for "more data waiting to be sent".
// / /
#define COMMAND_FROM_APPLE 0 // 0_______
#define COMMAND_FROM_ESP 128 // 1_______
#define COMMAND_MORE_DATA_WAITING 1 // _0000001
#define COMMAND_NO_DATA_WAITING 0 // _0000001
#define COMMAND_GENERIC_MESSAGE 2 // _000001_
#define COMMAND_FETCH_WEATHER 4 // _000010_
#define COMMAND_SEND_LONG_STRING 12 // _000110_
#define COMMAND_FORMAT_RAM 126 // _111111_
#define ETX 3 // ASCII "End of Text" (ETX) character
/************/
/* Interupt */
/************/
/* Variables shared between ISR and main code need to be volatile */
volatile bool isr_handled = false;
volatile uint32_t raw_register_read;
volatile uint16_t raw_register1_read;
/**********************/
/* WiFi and Webserver */
/**********************/
// Replace with your network credentials
const char* wifi_ssid = "GSO";
//const char* wifi_ssid = "Pixel_8985";
const char* wifi_password = "xerxes27";
AsyncWebServer web_server(80);
//WebServer web_server(80);
/*******************/
/* Weather Service */
/*******************/
const String weather_service_api_key= "0ab97bbbea58592d7c9d64067a34d2d0";
const String weather_url = "http://api.openweathermap.org/data/2.5/weather?";
#define ACK 0b00000110 // Acknowledge
#define EOT 0b00000100 // End of transmit
/*********/
/* Misc. */
/*********/
const long readLoopInterval = 10000; // millis
const long readLoopInterval = 100; // millis
unsigned long lastReadLoopTime = 0;
//byte ram[ADDRESS_BUS_SIZE];
//byte ram[256];
byte ram[256];
volatile byte ram_busy=0;
//const unsigned int RAM_BUSY=666;
#define RAM_BUSY 666
/*################################################
# ISR #
################################################*/
void IRAM_ATTR isrDEVSEL(void) {
raw_register_read = REG_READ(GPIO_IN_REG);
raw_register1_read = REG_READ(GPIO_IN1_REG);
isr_handled = true;
}
byte lastAppleCommand = 0;
/*################################################
# Functions #
################################################*/
void unbusy_ram() {
set_address(ESP_COMMAND_ADDRESS);
ram_busy = false;
}
boolean set_address(int address) {
if (ram_busy) {
Serial.println("BUSY");
return false;
}
ram_busy = true;
//Serial.print(" Setting address (");
//Serial.print(address);
//Serial.println(")");
//delay(20);
Serial.print(" A:");
for (byte i=0; i<ADDRESS_BUS_SIZE; i++) {
//for (byte i=ADDRESS_BUS_SIZE; i>0; i--) {
byte state = bitRead(address, i);
digitalWrite(address_pins[i], state);
Serial.print(state);
}
Serial.println();
return true;
}
unsigned int read_data(int address) {
Serial.print("READ: ");
Serial.println(address);
byte read_data(int address) {
byte data_bus_read = 0;
if (set_address(address)) {
digitalWrite(RW_PIN, RW_READ); // Should already be set to RW_READ, but just in case.
Serial.print(" D:");
for (byte i=0; i<DATA_BUS_SIZE; i++) {
byte pin_state = digitalRead(data_pins[i]);
data_bus_read += pin_state * pow(2,i);
Serial.print(pin_state);
}
Serial.println();
ram_busy = false;
unbusy_ram();
return data_bus_read;
} else {
return RAM_BUSY;
}
}
//signed int convert_to_signed_byte(byte byte_to_convert) {
//if (abs(requested_byte_to_write) > 127) {
//if (requested_byte_to_write < 0) {
boolean write_data(byte address, byte byte_to_write) {
Serial.print("WRITE: ");
@ -182,7 +138,7 @@ boolean write_data(byte address, byte byte_to_write) {
for (byte i=0; i<DATA_BUS_SIZE; i++) {
pinMode(data_pins[i], INPUT);
}
ram_busy = false;
unbusy_ram();
return true;
} else {
return false;
@ -190,158 +146,55 @@ boolean write_data(byte address, byte byte_to_write) {
}
void store_ip_to_ram(byte offset) {
IPAddress ip_address = WiFi.localIP();
//for (int i=0; i < ADDRESS_BUS_SIZE; i++) {
for (int i=0; i < 4; i++) {
write_data(i+offset, ip_address[i]);
unsigned int write_string_to_shared_ram(String string_to_send, unsigned int address) {
//if (string_to_send.length() > 15 - 1) { // - 1 because of null character at end of string.
write_data(ESP_COMMAND_ADDRESS, 12);
unsigned int c = 0;
for (c=0; c < string_to_send.length(); c++) {
Serial.print("A(");
Serial.print(c);
Serial.print("): ");
Serial.println(string_to_send[c]);
write_data(address+c, string_to_send[c]);
}
write_data(address+c, ETX);
//write_data(15, COMMAND_FROM_ESP + command_message + COMMAND_NO_DATA_WAITING);
write_data(ESP_COMMAND_ADDRESS, 27);
return address+c;
}
void send_string_to_apple(String string_to_send, byte command_message) {
if (string_to_send.length() > 15 - 1) { // - 1 because of null character at end of string.
} else {
int c=0;
for (c=0; c < string_to_send.length(); c++) {
write_data(c, string_to_send[c]);
}
write_data(c+1, ETX);
write_data(15, COMMAND_FROM_ESP + command_message + COMMAND_NO_DATA_WAITING);
String read_string_from_ram(int address) {
byte c = 0;
int i = 0;
String read_string = "";
while ( (i<MAX_STR_LEN) && (c!=ETX) ) {
c = read_data(address+i);
read_string = read_string + char(c);
i++;
}
Serial.print("READ STRING:");
Serial.println(read_string);
return read_string;
}
void fetch_weather(char* city_name) {
HTTPClient http;
//http.begin(String(weather_url) + "?q=Tucson,us&APPID=" + String(weather_service_api_key));
const String request_url = weather_url + "q=Tucson,us&APPID=" + weather_service_api_key;
Serial.println(request_url);
http.begin(request_url);
int httpCode = http.GET(); //Make the request
delay(10);
if (httpCode > 0) { //Check for the returning code
String payload = http.getString();
//Serial.println(httpCode);
Serial.println("++++++++++++++++++++++++");
Serial.println(payload);
Serial.println("++++++++++++++++++++++++");
StaticJsonDocument<200> filter;
filter["weather"][0]["main"] = true;
filter["weather"][0]["description"] = true;
filter["main"]["humidity"] = true;
filter["main"]["temp"] = true;
filter["wind"]["speed"] = true;
filter["wind"]["deg"] = true;
StaticJsonDocument<400> doc;
DeserializationError error = deserializeJson(doc, payload, DeserializationOption::Filter(filter));
//DeserializationError error = deserializeJson(doc, payload);
if (error) {
Serial.print(F("deserializeJson() failed: "));
Serial.println(error.f_str());
} else {
//const char* main = doc["main"];
Serial.println("----------------------");
serializeJsonPretty(doc, Serial);
Serial.println("----------------------");
serializeJsonPretty(doc["wind"], Serial);
Serial.println("----------------------");
int temp = doc["main"]["humidity"];
int humidity = doc["main"]["humidity"];
float wind_speed = doc["wind"]["speed"];
int wind_deg = doc["wind"]["speed"];
String weather_description = doc["weather"][0]["description"];
write_data(0, round(temp-273.15));
write_data(1, round(humidity));
write_data(2, round(wind_deg/10)); // divide by twn because 360 is too big for 8 bits
write_data(3, round(wind_speed));
}
}
else {
Serial.println("Error on HTTP request");
}
http.end(); //Free the resources
}
void read_ram() {
//for (int i=0; i < 16; i++) {
for (int i=0; i < 256; i++) {
void read_ram(int size_to_read=256);
void read_ram(int size_to_read) {
for (int i=0; i < size_to_read; i++) {
unsigned int foo = read_data(i);
ram[i] = foo;
Serial.print(i);
Serial.print(" ");
Serial.println(foo);
}
}
String html_template_processor(const String& var) {
Serial.println("html_template_processor()");
String return_string = "";
if (var == "RAM_TABLE") {
read_ram();
//for (int i=0; i < 16; i++) {
for (int i=0; i < 256; i++) {
return_string += "<tr><td>"+String(i)+"</td><td>" + String(ram[i]) + "</td></tr>\n";
}
return return_string;
}
return var;
}
void www_weather(AsyncWebServerRequest *request) {
fetch_weather("Tucson");
request->send(SPIFFS, "/ram.htm", String(), false, html_template_processor);
}
void www_root(AsyncWebServerRequest *request) {
request->send(SPIFFS, "/index.htm", String(), false, html_template_processor);
}
void www_ram(AsyncWebServerRequest *request) {
request->send(SPIFFS, "/ram.htm", String(), false, html_template_processor);
}
void www_write_byte(AsyncWebServerRequest *request) {
Serial.println("www_write_byte()");
String address;
String data_byte;
if (request->hasParam("address")) {
address = request->getParam("address")->value();
//Serial.println("Found address: "+address);
if (request->hasParam("data")) {
data_byte = request->getParam("data")->value();
//Serial.println("Found data: "+data_byte);
write_data(address.toInt(), data_byte.toInt());
}
}
request->send(SPIFFS, "/ram.htm", String(), false, html_template_processor);
}
void www_css(AsyncWebServerRequest *request) {
request->send(SPIFFS, "/a2i.css", "text/css");
}
void prefill_ram_with_pattern_data() {
write_data(15, 0); // notify Apple IIe we are done processing command byte
write_data(14, 123); // notify Apple IIe we are done processing command byte
write_data(13, 1); // notify Apple IIe we are done processing command byte
write_data(12, 123); // notify Apple IIe we are done processing command byte
write_data(11, 2); // notify Apple IIe we are done processing command byte
write_data(10, 123); // notify Apple IIe we are done processing command byte
write_data(9, 3); // notify Apple IIe we are done processing command byte
write_data(8, 123); // notify Apple IIe we are done processing command byte
write_data(7, 4); // notify Apple IIe we are done processing command byte
write_data(6, 123); // notify Apple IIe we are done processing command byte
write_data(5, 5); // notify Apple IIe we are done processing command byte
write_data(4, 123); // notify Apple IIe we are done processing command byte
write_data(3, 6); // notify Apple IIe we are done processing command byte
write_data(2, 123); // notify Apple IIe we are done processing command byte
write_data(1, 7); // notify Apple IIe we are done processing command byte
write_data(0, 123); // notify Apple IIe we are done processing command byte
}
/*################################################
# Setup #
################################################*/
void setup() {
Serial.begin(115200);
/* Configure ESP32 Pins */
pinMode(A0R, OUTPUT); digitalWrite(A0R, LOW);
@ -365,11 +218,6 @@ void setup() {
pinMode(INPUT_34, INPUT);
pinMode(INPUT_35, INPUT);
delay(10);
//wifi_scan();
/* Connect to wifi */
Serial.begin(115200);
Serial.println("");
Serial.println("Starting wifi...");
Serial.print(" connecting to: ");
@ -380,96 +228,123 @@ void setup() {
delay(900);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected successfully");
Serial.print("Got IP: ");
Serial.println(WiFi.localIP()); //Show ESP32 IP on serial
prefill_ram_with_pattern_data();
store_ip_to_ram(0);
//store_ip_to_ram(4);
// Set WiFi to station mode and disconnect from an AP if it was previously connected
WiFi.mode(WIFI_STA);
WiFi.disconnect();
delay(10);
/* Start webserver */
if(!SPIFFS.begin()){
Serial.println("An Error has occurred while mounting SPIFFS");
}
web_server.on("/", HTTP_GET, www_root);
web_server.on("/a2i.css", HTTP_GET, www_css);
web_server.on("/ram", HTTP_GET, www_ram);
web_server.on("/write_byte", HTTP_GET, www_write_byte);
web_server.on("/weather", HTTP_GET, www_weather);
web_server.on("/heap", HTTP_GET, [](AsyncWebServerRequest *request){
request->send(200, "text/plain", "Free Heap: " + String(ESP.getFreeHeap()) + " bytes.");
});
write_string_to_shared_ram("Starting Up!", SHARED_RAM_START_ADDRESS);
write_data(ESP_COMMAND_ADDRESS, ACK);
write_data(APPLE_COMMAND_ADDRESS, ACK);
//web_server.on("/hello", HTTP_GET, [](AsyncWebServerRequest *request){
//request->send(200, "text/plain", "Hello World");
//});
//web_server.on("/", www_root);
web_server.begin();
Serial.println("HTTP server started");
delay(10);
/* Display file system contents */
Serial.println("-----------------------------------------");
File root_filesystem = SPIFFS.open("/");
File f = root_filesystem.openNextFile();
while(f){
Serial.print("FILE: ");
Serial.println(f.name());
f = root_filesystem.openNextFile();
}
Serial.println("-----------------------------------------");
//attachInterrupt(DEVSEL_PIN, isrDEVSEL, LOW);
Serial.println("Setup done");
}
/*################################################
# Main #
################################################*/
void scan_wifi() {
Serial.println("scan start");
// WiFi.scanNetworks will return the number of networks found
int n = WiFi.scanNetworks();
Serial.println("scan done");
int address_counter = SHARED_RAM_START_ADDRESS + 1;
if (n == 0) {
Serial.println("no networks found");
write_data(0, address_counter);
} else {
Serial.print(n);
Serial.println(" networks found");
write_data(n, address_counter);
for (int i = 0; i < n; ++i) {
// Print SSID and RSSI for each network found
Serial.print(i + 1);
Serial.print(": ");
Serial.print(WiFi.SSID(i));
Serial.print(" (");
Serial.print(WiFi.RSSI(i));
Serial.print(")");
Serial.println((WiFi.encryptionType(i) == WIFI_AUTH_OPEN)?" ":"*");
delay(10);
address_counter = write_string_to_shared_ram(WiFi.SSID(i), address_counter + 1);
//address_counter = write_string_to_shared_ram(String(WiFi.RSSI(i)), address_counter + 1);
//address_counter = write_string_to_shared_ram(WiFi.encryptionType(i), address_counter + 1);
}
}
write_data(ESP_COMMAND_ADDRESS, EOT);
Serial.println("");
}
void store_ip_to_ram(byte offset) {
IPAddress ip_address = WiFi.localIP();
//for (int i=0; i < ADDRESS_BUS_SIZE; i++) {
for (int i=0; i < 4; i++) {
write_data(i+offset, ip_address[i]);
}
}
const char* wifi_ssid = "";
const char* wifi_password = "";
void loop() {
//if (isr_handled) {
//data_byte = raw_register_read >> 12 & 0b00000000000011111111;
//isr_handled = false;
//}
if ((millis() - lastReadLoopTime) > readLoopInterval) {
//Serial.println("+++");
unsigned int command_byte = read_data(15);
byte command_byte = read_data(APPLE_COMMAND_ADDRESS);
if (command_byte == RAM_BUSY) {
Serial.println("Command Read: RAM BUSY");
}
else if (command_byte < COMMAND_FROM_ESP) {
// command came from apple (or webform).
Serial.print("Command Read: ");
else if (command_byte != lastAppleCommand){
Serial.print("Command Switch command_byte: ");
Serial.println(command_byte);
//write_data(15, 1); // notify Apple IIe we are processing command byte
switch(command_byte) {
case COMMAND_FETCH_WEATHER:
Serial.println("Fetch Weather");
fetch_weather("Tucson");
break;
case COMMAND_SEND_LONG_STRING:
//send_string_to_apple("This is a long string", COMMAND_GENERIC_MESSAGE);
send_string_to_apple("ABCDE", COMMAND_GENERIC_MESSAGE);
case COMMAND_FORMAT_RAM:
Serial.println("Calling prefill_ram_with_pattern_data()");
prefill_ram_with_pattern_data();
write_data(15, 0); // notify Apple IIe we are done processing command byte
case COMMAND_SCAN_WIFI:
write_data(ESP_COMMAND_ADDRESS, ACK); // notify Apple IIe we are processing command byte
//String read_string = read_string_from_ram(SHARED_RAM_START_ADDRESS);
//write_string_to_shared_ram(rot13(read_string), SHARED_RAM_START_ADDRESS);
scan_wifi();
write_data(APPLE_COMMAND_ADDRESS, ACK); // notify Apple IIe we are processing command byte
break;
}
/*
byte c = 0;
while (ram_busy && (c < 10)) {
delay(10);
c = c+1;
Serial.print("_");
switch(command_byte) {
case COMMAND_CONNECT:
write_data(ESP_COMMAND_ADDRESS, ACK); // notify Apple IIe we are processing command byte
int access_point_n = read_data(SHARED_RAM_START_ADDRESS);
String ssid_as_String = WiFi.SSID(access_point_n);
String password_as_String = read_string_from_ram(SHARED_RAM_START_ADDRESS+1);
wifi_password = password_as_String.c_str();
wifi_ssid = ssid_as_String.c_str();
//wifi_password = read_string_from_ram(SHARED_RAM_START_ADDRESS+1);
//wifi_ssid = WiFi.SSID(access_point_n);
//WiFi.begin(wifi_ssid, wifi_password);
Serial.print("password:");
Serial.println(password_as_String);
Serial.print("password:(");
Serial.print(wifi_password);
Serial.println(")");
//WiFi.begin(wifi_ssid, wifi_password);
WiFi.begin("GSO", "xerxes27");
while (WiFi.status() != WL_CONNECTED) {
delay(300);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected successfully");
Serial.print("Got IP: ");
Serial.println(WiFi.localIP()); //Show ESP32 IP on serial
store_ip_to_ram(SHARED_RAM_START_ADDRESS);
write_data(APPLE_COMMAND_ADDRESS, ACK);
break;
}
Serial.println("^^^^");
write_data(15, 0); // notify Apple IIe we are done processing command byte
read_data(15); // notify Apple IIe we are done processing command byte
*/
lastAppleCommand = command_byte;
write_data(ESP_COMMAND_ADDRESS, EOT); // notify Apple IIe we are done processing command byte
}
lastReadLoopTime = millis();
}

328
examples/wifi_scan.old/wifi_scan.ino Normal file
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@ -0,0 +1,328 @@
/*
Use this program with the Apple2idIOT card and the basic programs RRAM, WRAM and CMDROT to read/write and rot13
a single string contained within the dual port ram on the card.
*/
#define DEBUG true
// Load Wi-Fi library
#include <WiFi.h>
/**************/
/* ESP32 Pins */
/**************/
/* DATA BUS (numbers mean GPIO port) */
#define D0R 12
#define D1R 13
#define D2R 14
#define D3R 15
#define D4R 16
#define D5R 17
#define D6R 18
#define D7R 19
byte data_pins[] = {D7R, D6R, D5R, D4R, D3R, D2R, D1R, D0R};
#define DATA_BUS_SIZE 8
/* Address Bus */
#define A0R 21
#define A1R 22
#define A2R 23
#define A3R 25
#define A4R 26
#define A5R 27
#define A6R 32
#define A7R 33
byte address_pins[] = {A0R, A1R, A2R, A3R, A4R, A5R, A6R, A7R};
#define ADDRESS_BUS_SIZE 8
#define ESP_COMMAND_ADDRESS 0
#define APPLE_COMMAND_ADDRESS 1
#define SHARED_RAM_START_ADDRESS 2
#define RAM_BUSY 666
#define MAX_STR_LEN 44 // arbitrary length.
#define COMMAND_GENERIC 0b10000000
#define COMMAND_SCAN_WIFI 111
#define COMMAND_CONNECT 112
/* IDT7132S dual port ram chip enable */
#define RW_PIN 5
#define RW_WRITE LOW
#define RW_READ HIGH
#define INPUT_35 35
#define INPUT_34 34
#define ETX 3 // ASCII "End of Text" (ETX) character
#define ACK 0b00000110 // Acknowledge
#define EOT 0b00000100 // End of transmit
/*********/
/* Misc. */
/*********/
const long readLoopInterval = 100; // millis
unsigned long lastReadLoopTime = 0;
byte ram[256];
volatile byte ram_busy=0;
byte lastAppleCommand = 0;
/*################################################
# Functions #
################################################*/
void unbusy_ram() {
set_address(ESP_COMMAND_ADDRESS);
ram_busy = false;
}
boolean set_address(int address) {
if (ram_busy) {
Serial.println("BUSY");
return false;
}
ram_busy = true;
for (byte i=0; i<ADDRESS_BUS_SIZE; i++) {
byte state = bitRead(address, i);
digitalWrite(address_pins[i], state);
}
return true;
}
byte read_data(int address) {
byte data_bus_read = 0;
if (set_address(address)) {
digitalWrite(RW_PIN, RW_READ); // Should already be set to RW_READ, but just in case.
for (byte i=0; i<DATA_BUS_SIZE; i++) {
byte pin_state = digitalRead(data_pins[i]);
data_bus_read += pin_state * pow(2,i);
}
ram_busy = false;
unbusy_ram();
return data_bus_read;
} else {
return RAM_BUSY;
}
}
boolean write_data(byte address, byte byte_to_write) {
Serial.print("WRITE: ");
Serial.print(byte_to_write);
Serial.print(" -> ");
Serial.println(address);
if (set_address(address)) {
//set_address(address);
Serial.print(" D:");
for (byte i=0; i<DATA_BUS_SIZE; i++) {
byte bit_to_write = (byte_to_write >> i) & 0b00000001;
pinMode(data_pins[i], OUTPUT);
digitalWrite(data_pins[i], bit_to_write);
Serial.print(bit_to_write);
}
Serial.println();
digitalWrite(RW_PIN, RW_WRITE);
delay(1);
digitalWrite(RW_PIN, RW_READ);
for (byte i=0; i<DATA_BUS_SIZE; i++) {
pinMode(data_pins[i], INPUT);
}
unbusy_ram();
return true;
} else {
return false;
}
}
unsigned int write_string_to_shared_ram(String string_to_send, unsigned int address) {
//if (string_to_send.length() > 15 - 1) { // - 1 because of null character at end of string.
write_data(ESP_COMMAND_ADDRESS, 12);
unsigned int c = 0;
for (c=0; c < string_to_send.length(); c++) {
Serial.print("A(");
Serial.print(c);
Serial.print("): ");
Serial.println(string_to_send[c]);
write_data(address+c, string_to_send[c]);
}
write_data(address+c, ETX);
//write_data(15, COMMAND_FROM_ESP + command_message + COMMAND_NO_DATA_WAITING);
write_data(ESP_COMMAND_ADDRESS, 27);
return address+c;
}
String read_string_from_ram(int address) {
byte c = 0;
int i = 0;
String read_string = "";
while ( (i<MAX_STR_LEN) && (c!=ETX) ) {
c = read_data(address+i);
read_string = read_string + char(c);
i++;
}
Serial.print("READ STRING:");
Serial.println(read_string);
return read_string;
}
void read_ram(int size_to_read=256);
void read_ram(int size_to_read) {
for (int i=0; i < size_to_read; i++) {
unsigned int foo = read_data(i);
ram[i] = foo;
Serial.print(i);
Serial.print(" ");
Serial.println(foo);
}
}
/*################################################
# Setup #
################################################*/
void setup() {
Serial.begin(115200);
/* Configure ESP32 Pins */
pinMode(A0R, OUTPUT); digitalWrite(A0R, LOW);
pinMode(A1R, OUTPUT); digitalWrite(A1R, LOW);
pinMode(A2R, OUTPUT); digitalWrite(A2R, LOW);
pinMode(A3R, OUTPUT); digitalWrite(A3R, LOW);
pinMode(A4R, OUTPUT); digitalWrite(A4R, LOW);
pinMode(A5R, OUTPUT); digitalWrite(A5R, LOW);
pinMode(A6R, OUTPUT); digitalWrite(A6R, LOW);
pinMode(A7R, OUTPUT); digitalWrite(A7R, LOW);
pinMode(D0R, INPUT);
pinMode(D1R, INPUT);
pinMode(D2R, INPUT);
pinMode(D3R, INPUT);
pinMode(D4R, INPUT);
pinMode(D5R, INPUT);
pinMode(D6R, INPUT);
pinMode(D7R, INPUT);
pinMode(RW_PIN, OUTPUT); digitalWrite(RW_PIN, RW_READ);
pinMode(INPUT_34, INPUT);
pinMode(INPUT_35, INPUT);
write_string_to_shared_ram("Starting Up!", SHARED_RAM_START_ADDRESS);
// Set WiFi to station mode and disconnect from an AP if it was previously connected
WiFi.mode(WIFI_STA);
WiFi.disconnect();
delay(10);
write_data(ESP_COMMAND_ADDRESS, ACK);
write_data(APPLE_COMMAND_ADDRESS, ACK);
Serial.println("Setup done");
}
/*################################################
# Main #
################################################*/
void scan_wifi() {
Serial.println("scan start");
// WiFi.scanNetworks will return the number of networks found
int n = WiFi.scanNetworks();
Serial.println("scan done");
int address_counter = SHARED_RAM_START_ADDRESS + 1;
if (n == 0) {
Serial.println("no networks found");
write_data(0, address_counter);
} else {
Serial.print(n);
Serial.println(" networks found");
write_data(n, address_counter);
for (int i = 0; i < n; ++i) {
// Print SSID and RSSI for each network found
Serial.print(i + 1);
Serial.print(": ");
Serial.print(WiFi.SSID(i));
Serial.print(" (");
Serial.print(WiFi.RSSI(i));
Serial.print(")");
Serial.println((WiFi.encryptionType(i) == WIFI_AUTH_OPEN)?" ":"*");
delay(10);
address_counter = write_string_to_shared_ram(WiFi.SSID(i), address_counter + 1);
//address_counter = write_string_to_shared_ram(String(WiFi.RSSI(i)), address_counter + 1);
//address_counter = write_string_to_shared_ram(WiFi.encryptionType(i), address_counter + 1);
}
}
write_data(ESP_COMMAND_ADDRESS, EOT);
Serial.println("");
}
void store_ip_to_ram(byte offset) {
IPAddress ip_address = WiFi.localIP();
//for (int i=0; i < ADDRESS_BUS_SIZE; i++) {
for (int i=0; i < 4; i++) {
write_data(i+offset, ip_address[i]);
}
}
const char* wifi_ssid = "";
const char* wifi_password = "";
void loop() {
if ((millis() - lastReadLoopTime) > readLoopInterval) {
byte command_byte = read_data(APPLE_COMMAND_ADDRESS);
if (command_byte == RAM_BUSY) {
Serial.println("Command Read: RAM BUSY");
}
else if (command_byte != lastAppleCommand){
Serial.print("Command Switch command_byte: ");
Serial.println(command_byte);
switch(command_byte) {
case COMMAND_SCAN_WIFI:
write_data(ESP_COMMAND_ADDRESS, ACK); // notify Apple IIe we are processing command byte
//String read_string = read_string_from_ram(SHARED_RAM_START_ADDRESS);
//write_string_to_shared_ram(rot13(read_string), SHARED_RAM_START_ADDRESS);
scan_wifi();
write_data(APPLE_COMMAND_ADDRESS, ACK); // notify Apple IIe we are processing command byte
break;
}
switch(command_byte) {
case COMMAND_CONNECT:
write_data(ESP_COMMAND_ADDRESS, ACK); // notify Apple IIe we are processing command byte
int access_point_n = read_data(SHARED_RAM_START_ADDRESS);
String ssid_as_String = WiFi.SSID(access_point_n);
String password_as_String = read_string_from_ram(SHARED_RAM_START_ADDRESS+1);
wifi_password = password_as_String.c_str();
wifi_ssid = ssid_as_String.c_str();
//wifi_password = read_string_from_ram(SHARED_RAM_START_ADDRESS+1);
//wifi_ssid = WiFi.SSID(access_point_n);
//WiFi.begin(wifi_ssid, wifi_password);
Serial.print("password:");
Serial.println(password_as_String);
Serial.print("password:(");
Serial.print(wifi_password);
Serial.println(")");
//WiFi.begin(wifi_ssid, wifi_password);
WiFi.begin("GSO", "xerxes27");
while (WiFi.status() != WL_CONNECTED) {
delay(300);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected successfully");
Serial.print("Got IP: ");
Serial.println(WiFi.localIP()); //Show ESP32 IP on serial
store_ip_to_ram(SHARED_RAM_START_ADDRESS);
write_data(APPLE_COMMAND_ADDRESS, ACK);
break;
}
lastAppleCommand = command_byte;
write_data(ESP_COMMAND_ADDRESS, EOT); // notify Apple IIe we are done processing command byte
}
lastReadLoopTime = millis();
}
}

116
examples/wifi_scan/wifi_scan.ino Normal file
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@ -0,0 +1,116 @@
/*
Use this program with the Apple2idIOT card and the basic programs RRAM, WRAM and CMDROT to read/write and rot13
a single string contained within the dual port ram on the card.
*/
#include <WiFi.h>
#include <Apple2Idiot.h>
Apple2Idiot a2i = Apple2Idiot();
const char* wifi_ssid = "";
const char* wifi_password = "";
const long readLoopInterval = 100; // millis
unsigned long lastReadLoopTime = 0;
byte lastAppleCommand = 0;
/*################################################
# Setup #
################################################*/
void setup() {
Serial.begin(115200);
a2i.init();
// Set WiFi to station mode and disconnect from an AP if it was previously connected
WiFi.mode(WIFI_STA);
WiFi.disconnect();
Serial.println("Setup done");
}
/*################################################
# Main #
################################################*/
void scan_wifi() {
Serial.println("scan start");
// WiFi.scanNetworks will return the number of networks found
int n = WiFi.scanNetworks();
Serial.println("scan done");
int address_counter = SHARED_RAM_START_ADDRESS + 1;
if (n == 0) {
Serial.println("no networks found");
a2i.write_data(0, address_counter);
} else {
Serial.print(n);
Serial.println(" networks found");
a2i.write_data(n, address_counter);
for (int i = 0; i < n; ++i) {
// Print SSID and RSSI for each network found
Serial.print(i + 1);
Serial.print(": ");
Serial.println(WiFi.SSID(i));
delay(10);
address_counter = a2i.write_string_to_shared_ram(WiFi.SSID(i), address_counter + 1);
}
}
a2i.write_data(ESP_COMMAND_ADDRESS, EOT);
Serial.println("");
}
void store_ip_to_ram(byte offset) {
IPAddress ip_address = WiFi.localIP();
//for (int i=0; i < ADDRESS_BUS_SIZE; i++) {
for (int i=0; i < 4; i++) {
a2i.write_data(i+offset, ip_address[i]);
}
}
void loop() {
if ((millis() - lastReadLoopTime) > readLoopInterval) {
byte command_byte = a2i.read_data(APPLE_COMMAND_ADDRESS);
if (command_byte == RAM_BUSY) {
Serial.println("Command Read: RAM BUSY");
}
else if (command_byte != lastAppleCommand){
Serial.print("Command Switch command_byte: ");
Serial.println(command_byte);
switch(command_byte) {
case COMMAND_SCAN_WIFI:
a2i.write_data(ESP_COMMAND_ADDRESS, ACK); // notify Apple IIe we are processing command byte
scan_wifi();
a2i.write_data(APPLE_COMMAND_ADDRESS, ACK); // notify Apple IIe we are processing command byte
break;
}
switch(command_byte) {
case COMMAND_CONNECT:
a2i.write_data(ESP_COMMAND_ADDRESS, ACK); // notify Apple IIe we are processing command byte
int access_point_n = a2i.read_data(SHARED_RAM_START_ADDRESS);
String ssid_as_String = WiFi.SSID(access_point_n);
String password_as_String = a2i.read_string_from_ram(SHARED_RAM_START_ADDRESS+1);
wifi_password = password_as_String.c_str();
wifi_ssid = ssid_as_String.c_str();
WiFi.begin("GSO", "xerxes27");
while (WiFi.status() != WL_CONNECTED) {
delay(300);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected successfully");
Serial.print("Got IP: ");
Serial.println(WiFi.localIP()); //Show ESP32 IP on serial
store_ip_to_ram(SHARED_RAM_START_ADDRESS);
a2i.write_data(APPLE_COMMAND_ADDRESS, ACK);
break;
}
lastAppleCommand = command_byte;
a2i.write_data(ESP_COMMAND_ADDRESS, EOT); // notify Apple IIe we are done processing command byte
}
lastReadLoopTime = millis();
}
}

1
lib/Apple2Idiot/Apple2Idiot Symbolic link
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Apple2Idiot

142
lib/Apple2Idiot/Apple2Idiot.cpp Normal file
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#include <Arduino.h>
#include "Apple2Idiot.h"
byte data_pins[] = {D7R, D6R, D5R, D4R, D3R, D2R, D1R, D0R};
byte address_pins[] = {A0R, A1R, A2R, A3R, A4R, A5R, A6R, A7R};
volatile byte ram_busy=0;
byte ram[256];
Apple2Idiot::Apple2Idiot() {
}
void Apple2Idiot::init() {
pinMode(A0R, OUTPUT); digitalWrite(A0R, LOW);
pinMode(A1R, OUTPUT); digitalWrite(A1R, LOW);
pinMode(A2R, OUTPUT); digitalWrite(A2R, LOW);
pinMode(A3R, OUTPUT); digitalWrite(A3R, LOW);
pinMode(A4R, OUTPUT); digitalWrite(A4R, LOW);
pinMode(A5R, OUTPUT); digitalWrite(A5R, LOW);
pinMode(A6R, OUTPUT); digitalWrite(A6R, LOW);
pinMode(A7R, OUTPUT); digitalWrite(A7R, LOW);
pinMode(D0R, INPUT);
pinMode(D1R, INPUT);
pinMode(D2R, INPUT);
pinMode(D3R, INPUT);
pinMode(D4R, INPUT);
pinMode(D5R, INPUT);
pinMode(D6R, INPUT);
pinMode(D7R, INPUT);
pinMode(RW_PIN, OUTPUT); digitalWrite(RW_PIN, RW_READ);
pinMode(INPUT_34, INPUT);
pinMode(INPUT_35, INPUT);
write_string_to_shared_ram("Starting Up!", SHARED_RAM_START_ADDRESS);
write_data(ESP_COMMAND_ADDRESS, ACK);
write_data(APPLE_COMMAND_ADDRESS, ACK);
}
void Apple2Idiot::unbusy_ram() {
set_address(ESP_COMMAND_ADDRESS);
ram_busy = false;
}
boolean Apple2Idiot::set_address(int address) {
if (ram_busy) {
Serial.println("BUSY");
return false;
}
ram_busy = true;
for (byte i=0; i<ADDRESS_BUS_SIZE; i++) {
byte state = bitRead(address, i);
digitalWrite(address_pins[i], state);
}
return true;
}
byte Apple2Idiot::read_data(int address) {
byte data_bus_read = 0;
if (set_address(address)) {
digitalWrite(RW_PIN, RW_READ); // Should already be set to RW_READ, but just in case.
for (byte i=0; i<DATA_BUS_SIZE; i++) {
byte pin_state = digitalRead(data_pins[i]);
data_bus_read += pin_state * pow(2,i);
}
ram_busy = false;
unbusy_ram();
return data_bus_read;
} else {
return RAM_BUSY;
}
}
boolean Apple2Idiot::write_data(byte address, byte byte_to_write) {
Serial.print("WRITE: ");
Serial.print(byte_to_write);
Serial.print(" -> ");
Serial.println(address);
if (set_address(address)) {
//set_address(address);
Serial.print(" D:");
for (byte i=0; i<DATA_BUS_SIZE; i++) {
byte bit_to_write = (byte_to_write >> i) & 0b00000001;
pinMode(data_pins[i], OUTPUT);
digitalWrite(data_pins[i], bit_to_write);
Serial.print(bit_to_write);
}
Serial.println();
digitalWrite(RW_PIN, RW_WRITE);
delay(1);
digitalWrite(RW_PIN, RW_READ);
for (byte i=0; i<DATA_BUS_SIZE; i++) {
pinMode(data_pins[i], INPUT);
}
unbusy_ram();
return true;
} else {
return false;
}
}
unsigned int Apple2Idiot::write_string_to_shared_ram(String string_to_send, unsigned int address) {
//if (string_to_send.length() > 15 - 1) { // - 1 because of null character at end of string.
write_data(ESP_COMMAND_ADDRESS, 12);
unsigned int c = 0;
for (c=0; c < string_to_send.length(); c++) {
Serial.print("A(");
Serial.print(c);
Serial.print("): ");
Serial.println(string_to_send[c]);
write_data(address+c, string_to_send[c]);
}
write_data(address+c, ETX);
//write_data(15, COMMAND_FROM_ESP + command_message + COMMAND_NO_DATA_WAITING);
write_data(ESP_COMMAND_ADDRESS, 27);
return address+c;
}
String Apple2Idiot::read_string_from_ram(int address) {
byte c = 0;
int i = 0;
String read_string = "";
while ( (i<MAX_STR_LEN) && (c!=ETX) ) {
c = read_data(address+i);
read_string = read_string + char(c);
i++;
}
Serial.print("READ STRING:");
Serial.println(read_string);
return read_string;
}
void Apple2Idiot::read_ram(int size_to_read) {
for (int i=0; i < size_to_read; i++) {
unsigned int foo = read_data(i);
ram[i] = foo;
Serial.print(i);
Serial.print(" ");
Serial.println(foo);
}
}

65
lib/Apple2Idiot/Apple2Idiot.h Normal file
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#ifndef APPLE2IDIOT
#define APPLE2IDIOT
#include <Arduino.h>
/* DATA BUS (numbers mean GPIO port) */
#define D0R 12
#define D1R 13
#define D2R 14
#define D3R 15
#define D4R 16
#define D5R 17
#define D6R 18
#define D7R 19
#define DATA_BUS_SIZE 8
/* Address Bus */
#define A0R 21
#define A1R 22
#define A2R 23
#define A3R 25
#define A4R 26
#define A5R 27
#define A6R 32
#define A7R 33
#define ADDRESS_BUS_SIZE 8
#define ESP_COMMAND_ADDRESS 0
#define APPLE_COMMAND_ADDRESS 1
#define SHARED_RAM_START_ADDRESS 2
#define RAM_BUSY 666
#define MAX_STR_LEN 44 // arbitrary length.
#define COMMAND_GENERIC 0b10000000
#define COMMAND_SCAN_WIFI 111
#define COMMAND_CONNECT 112
/* IDT7132S dual port ram chip enable */
#define RW_PIN 5
#define RW_WRITE LOW
#define RW_READ HIGH
#define ETX 3 // ASCII "End of Text" (ETX) character
#define ACK 0b00000110 // Acknowledge
#define EOT 0b00000100 // End of transmit
#define INPUT_35 35
#define INPUT_34 34
class Apple2Idiot {
private:
void unbusy_ram();
public:
Apple2Idiot();
void init();
boolean set_address(int address);
byte read_data(int address);
boolean write_data(byte address, byte byte_to_write);
unsigned int write_string_to_shared_ram(String string_to_send, unsigned int address);
String read_string_from_ram(int address);
void read_ram(int size_to_read=256);
};
#endif

2
notes.md
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@ -10,6 +10,8 @@ DONE: Add a GND and +5V breakout.
Fix DEVSEL address in silkscreen docs.
DONE: Unconnect addresses above A7.
DONE: Add diode to +5V.
Move ESP32 towards keyboard to accomodate USB
Software reset of ESP32
## Thanks