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https://github.com/demik/quack.git
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more ADB hakinck
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parent
b2a5a28290
commit
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84
main/adb.c
84
main/adb.c
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@ -27,6 +27,7 @@
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#include "sdkconfig.h"
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#include "sdkconfig.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "freertos/task.h"
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#include "esp_log.h"
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#include "esp_system.h"
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#include "esp_system.h"
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#include "esp_spi_flash.h"
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#include "esp_spi_flash.h"
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#include "driver/rmt.h"
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#include "driver/rmt.h"
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@ -36,7 +37,7 @@
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#include "gpio.h"
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#include "gpio.h"
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/* globals */
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/* globals */
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rmt_config_t adb_rmt_rx;
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rmt_config_t adb_rmt_rx = RMT_DEFAULT_CONFIG_RX(GPIO_ADB, RMT_RX_CHANNEL);
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extern TaskHandle_t t_green, t_blue, t_yellow, t_red;
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extern TaskHandle_t t_green, t_blue, t_yellow, t_red;
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/* static defines */
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/* static defines */
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@ -53,8 +54,14 @@ void adb_init(void) {
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gpio_set_level(GPIO_ADB, 1);
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gpio_set_level(GPIO_ADB, 1);
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adb_tx_reset();
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adb_tx_reset();
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/* init RMT driver for ADB RX */
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/* avoir console flood when installing/uninstalling RMT driver */
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adb_rmt_rx = RMT_DEFAULT_CONFIG_RX(GPIO_ADB, RMT_RX_CHANNEL);
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esp_log_level_set("intr_alloc", ESP_LOG_INFO);
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/* init RMT RX driver with default values for ADB */
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adb_rmt_rx.rx_config.filter_en = true;
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adb_rmt_rx.rx_config.filter_ticks_thresh = 10;
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adb_rmt_rx.rx_config.idle_threshold = 100;
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rmt_config(&adb_rmt_rx);
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/* If jumper is set, switch to ADB host mode */
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/* If jumper is set, switch to ADB host mode */
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if (gpio_get_level(GPIO_ADBSRC) == 0)
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if (gpio_get_level(GPIO_ADBSRC) == 0)
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@ -68,16 +75,15 @@ void adb_task_host(void *pvParameters) {
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if (gpio_get_level(GPIO_BTOFF) == 0)
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if (gpio_get_level(GPIO_BTOFF) == 0)
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xTaskNotify(t_green, LED_ON, eSetValueWithOverwrite);
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xTaskNotify(t_green, LED_ON, eSetValueWithOverwrite);
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ESP_LOGI("ADB", "ADB host started");
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/* poll the mouse like a maniac. It will answer only if there is user input */
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/* poll the mouse like a maniac. It will answer only if there is user input */
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ESP_ERROR_CHECK(rmt_driver_install(RMT_RX_CHANNEL, 200, 0));
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while (1) {
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while (1) {
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vTaskDelay(20 / portTICK_PERIOD_MS);
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vTaskDelay(20 / portTICK_PERIOD_MS);
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adb_tx_cmd(ADB_MOUSE|ADB_TALK|ADB_REG0);
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adb_tx_cmd(ADB_MOUSE|ADB_TALK|ADB_REG0);
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data = adb_rx_mouse();
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if (adb_rx_tlt()) {
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data = adb_rx_mouse();
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xTaskNotify(t_yellow, LED_ONCE, eSetValueWithOverwrite);
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}
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}
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}
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}
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}
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@ -85,40 +91,34 @@ void adb_task_mouse(void *pvParameters) {
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}
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}
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static uint16_t adb_rx_mouse() {
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int dur( uint32_t level, uint32_t duration ) {
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return 0;
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if ( level == 0 ) { return duration; }
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else { return -1.0 * duration; }
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}
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}
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static inline bool adb_rx_tlt() {
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static uint16_t adb_rx_mouse() {
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/*
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RingbufHandle_t rb = NULL;
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* Stop-to-start time aka Tlt in some docs. This is called after a command packet
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rmt_item32_t* items = NULL;
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* The start bit has to appear between 140µs and 260µs
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size_t rx_size = 0;
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*
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size_t i;
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* return flase if no start bit detected
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* return true if start bit detected
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*/
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char i;
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rmt_get_ringbuf_handle(RMT_RX_CHANNEL, &rb);
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assert(rb != NULL);
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rmt_rx_start(RMT_RX_CHANNEL, true);
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items = (rmt_item32_t*) xRingbufferReceive(rb, &rx_size, pdMS_TO_TICKS(10));
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printf( ">>> %i\n", rx_size);
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rmt_rx_stop(RMT_RX_CHANNEL);
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/* wait 130µs then start polling */
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if (rx_size > (1 * sizeof(rmt_item32_t)))
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ets_delay_us(130);
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xTaskNotify(t_yellow, LED_ONCE, eSetValueWithOverwrite);
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else
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for (i = 0; i < 130; i++) {
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return 0;
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if (gpio_get_level(GPIO_ADB) == 0) {
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for (i = 0; i < (rx_size / sizeof(rmt_item32_t)); i++) {
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/* start bit found. wait for the end of it */
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printf("%d:%dus %d:%dus\n", (items+i)->level0, (items+i)->duration0, (items+i)->level1, (items+i)->duration1);
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ets_delay_us(99-2);
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return true;
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}
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ets_delay_us(1);
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}
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}
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vRingbufferReturnItem(rb, (void*) items);
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/*
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return 0;
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* actually we wait more than 260µs because calling ets_delay_us takes
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* a little more than 1µs to call. Depending on scheduling, the wait times is
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* between 390µS and 650µs which is way past specs.
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*/
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return false;
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}
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}
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static inline void adb_tx_as() {
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static inline void adb_tx_as() {
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@ -131,6 +131,7 @@ static inline void adb_tx_as() {
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void adb_tx_cmd(unsigned char cmd) {
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void adb_tx_cmd(unsigned char cmd) {
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gpio_set_direction(GPIO_ADB, GPIO_MODE_OUTPUT);
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gpio_set_direction(GPIO_ADB, GPIO_MODE_OUTPUT);
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adb_tx_as();
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adb_tx_as();
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/* send actual byte (unrolled loop) */
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/* send actual byte (unrolled loop) */
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@ -146,14 +147,15 @@ void adb_tx_cmd(unsigned char cmd) {
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/* stop bit */
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/* stop bit */
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adb_tx_zero();
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adb_tx_zero();
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gpio_set_direction(GPIO_ADB, GPIO_MODE_INPUT);
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gpio_set_direction(GPIO_ADB, GPIO_MODE_INPUT);
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gpio_set_pull_mode(GPIO_ADB, GPIO_PULLUP_ONLY);
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}
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}
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static inline void adb_tx_one() {
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static inline void adb_tx_one() {
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/* values from AN591 Datasheet minus the estimated call to ets_delay_us */
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/* values from AN591 Datasheet minus the estimated call to ets_delay_us */
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gpio_set_level(GPIO_ADB, 0);
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gpio_set_level(GPIO_ADB, 0);
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ets_delay_us(35-1);
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ets_delay_us(ADB_1_LOW - 1);
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gpio_set_level(GPIO_ADB, 1);
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gpio_set_level(GPIO_ADB, 1);
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ets_delay_us(65-1);
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ets_delay_us(ADB_1_HIGH - 1);
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}
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}
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void adb_tx_reset() {
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void adb_tx_reset() {
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@ -164,7 +166,7 @@ void adb_tx_reset() {
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*/
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*/
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gpio_set_level(GPIO_ADB, 0);
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gpio_set_level(GPIO_ADB, 0);
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ets_delay_us(3000);
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ets_delay_us(ADB_RESET);
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gpio_set_level(GPIO_ADB, 1);
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gpio_set_level(GPIO_ADB, 1);
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ets_delay_us(500);
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ets_delay_us(500);
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}
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}
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@ -172,7 +174,7 @@ void adb_tx_reset() {
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static inline void adb_tx_zero() {
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static inline void adb_tx_zero() {
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/* values from AN591 Datasheet minus the estimated call to ets_delay_us */
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/* values from AN591 Datasheet minus the estimated call to ets_delay_us */
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gpio_set_level(GPIO_ADB, 0);
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gpio_set_level(GPIO_ADB, 0);
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ets_delay_us(65-1);
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ets_delay_us(ADB_0_LOW - 1);
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gpio_set_level(GPIO_ADB, 1);
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gpio_set_level(GPIO_ADB, 1);
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ets_delay_us(35-1);
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ets_delay_us(ADB_0_HIGH - 1);
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}
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}
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@ -34,12 +34,21 @@ void adb_tx_cmd(unsigned char cmd);
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void adb_tx_reset(void);
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void adb_tx_reset(void);
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/* defines */
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/* defines */
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#define RMT_RX_CHANNEL RMT_CHANNEL_0
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#define tskADB_PRIORITY 4
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#define tskADB_PRIORITY 4
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/* ADB timers */
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#define ADB_RESET 3000
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#define ADB_0_LOW 65
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#define ADB_0_HIGH 35
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#define ADB_1_LOW 35
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#define ADB_1_HIGH 65
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/* ADB commands values from 00591b.pdf page 16-17 */
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/* ADB commands values from 00591b.pdf page 16-17 */
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#define ADB_MOUSE (3<<4)
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#define ADB_MOUSE (3<<4)
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#define ADB_TALK 0xC
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#define ADB_TALK 0xC
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#define ADB_LISTEN 0x8
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#define ADB_LISTEN 0x8
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#define ADB_REG0 0x0
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#define ADB_REG0 0x0
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#define ADB_REG3 0x3
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#endif
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#endif
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gpio_set_direction(GPIO_BTOFF, GPIO_MODE_INPUT);
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gpio_set_direction(GPIO_BTOFF, GPIO_MODE_INPUT);
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/* ADB */
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/* ADB */
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gpio_set_direction(GPIO_ADB, GPIO_MODE_OUTPUT);
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gpio_set_direction(GPIO_ADB, GPIO_MODE_INPUT);
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/* Quadrature mouse */
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/* Quadrature mouse */
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gpio_reset_pin(GPIO_CLICK);
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gpio_reset_pin(GPIO_CLICK);
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@ -74,6 +74,8 @@ void gpio_init(void) {
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gpio_set_direction(GPIO_QY2, GPIO_MODE_OUTPUT);
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gpio_set_direction(GPIO_QY2, GPIO_MODE_OUTPUT);
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gpio_set_level(GPIO_CLICK, 1);
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gpio_set_level(GPIO_CLICK, 1);
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gpio_set_level(GPIO_QY1, 1);
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gpio_set_level(GPIO_QY2, 1);
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}
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}
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void gpio_output_disable(void) {
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void gpio_output_disable(void) {
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