mirror of
https://github.com/TomNisbet/TommyPROM.git
synced 2024-06-02 20:41:31 +00:00
642f540df2
The Arduino IDE requires that a sketch be located in a folder of the same name. Although the name of the repository does match the sketch name, when GitHub's popular Clone or download > Download ZIP feature is used to download the contents of a repository the branch/release/commit name is appended to the folder name, causing a mismatch. When opening a file that does not meet this sketch/folder name matching requirement the Arduino IDE presents a dialog: The file "TommyPROM.ino" needs to be inside a sketch folder named "TommyPROM". Create this folder, move the file, and continue? After clicking "OK" the Arduino IDE currently moves only the file TommyPROM.ino to the new folder, leaving behind the other source files. This causes compilation of the sketch to fail: TommyPROM-master\TommyPROM\TommyPROM.ino:13:23: fatal error: Configure.h: No such file or directory #include "Configure.h"
116 lines
2.9 KiB
C++
116 lines
2.9 KiB
C++
#include "Configure.h"
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#if defined(PROM_IS_8755)
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#define CE1 A0
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#define CE2 A1
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#define RD A2
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#define AD8 A5
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#define AD9 A4
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#define AD10 A3
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#define ALE 12
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#define VDDCTL 11
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PromDevice8755::PromDevice8755(unsigned long size)
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: PromDevice(size, 0, 0, false)
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{
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}
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void PromDevice8755::begin()
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{
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// Define the data bus as input initially so that it does not put out a
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// signal that could collide with output on the data pins of the EEPROM.
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setDataBusMode(INPUT);
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// Define the EEPROM control pins as output, making sure they are all
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// in the disabled state.
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digitalWrite(RD, HIGH);
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pinMode(RD, OUTPUT);
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digitalWrite(VDDCTL, LOW);
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pinMode(VDDCTL, OUTPUT);
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digitalWrite(CE1, LOW);
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pinMode(CE1, OUTPUT);
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digitalWrite(CE2, LOW);
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pinMode(CE2, OUTPUT);
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digitalWrite(ALE, LOW);
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pinMode(ALE, OUTPUT);
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// The address control pins are always outputs.
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pinMode(AD8, OUTPUT);
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pinMode(AD9, OUTPUT);
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pinMode(AD10, OUTPUT);
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digitalWrite(AD8, LOW);
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digitalWrite(AD9, LOW);
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digitalWrite(AD10, LOW);
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}
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// BEGIN PRIVATE METHODS
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//
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// Set an 11 bit address using the 8 address/data bus lines and three more dedicated
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// address lines. The read and burn code will take care of the ALE line
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void PromDevice8755::setAddress(word address)
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{
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writeDataBus(byte(address & 0xff));
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digitalWrite(AD8, address & 0x100 ? HIGH : LOW);
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digitalWrite(AD9, address & 0x200 ? HIGH : LOW);
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digitalWrite(AD10, address & 0x400 ? HIGH : LOW);
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}
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// Read a byte from a given address
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byte PromDevice8755::readByte(word address)
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{
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byte data = 0;
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digitalWrite(RD, HIGH);
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digitalWrite(CE1, LOW);
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// Put the address on the bus and latch it with ALE
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digitalWrite(CE2, HIGH);
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setDataBusMode(OUTPUT);
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setAddress(address);
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digitalWrite(ALE, HIGH);
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digitalWrite(ALE, LOW);
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// Read a byte
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setDataBusMode(INPUT);
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setAddress(0xff);
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digitalWrite(RD, LOW);
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delayMicroseconds(1);
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data = readDataBus();
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digitalWrite(RD, HIGH);
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digitalWrite(CE2, LOW);
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return data;
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}
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// Burn a byte to the chip and verify that it was written.
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bool PromDevice8755::burnByte(byte value, word address)
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{
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// Latch the address and the CE lines
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digitalWrite(ALE, HIGH);
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digitalWrite(CE1, LOW);
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digitalWrite(CE2, HIGH);
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setAddress(address);
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digitalWrite(ALE, LOW);
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// Burn the byte value by setting CE1 high and then setting VDD to +25V for 50ms.
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setDataBusMode(OUTPUT);
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writeDataBus(value);
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digitalWrite(CE1, HIGH);
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digitalWrite(VDDCTL, HIGH);
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delay(50);
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digitalWrite(VDDCTL, LOW);
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digitalWrite(CE1, LOW);
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// Read back the value and return success if it matches
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return readByte(address) == value;
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}
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#endif // #if defined(PROM_IS_8755)
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