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* Removed non-existant SPI1 interface on rak4631 * trunk fmt
67 lines
1.6 KiB
C
67 lines
1.6 KiB
C
#include "../configuration.h"
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#ifdef RAK_4631
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#include "../main.h"
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#include <SPI.h>
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void d_writeCommand(uint8_t c)
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{
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SPI.beginTransaction(SPISettings(4000000, MSBFIRST, SPI_MODE0));
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if (PIN_EINK_DC >= 0)
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digitalWrite(PIN_EINK_DC, LOW);
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if (PIN_EINK_CS >= 0)
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digitalWrite(PIN_EINK_CS, LOW);
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SPI.transfer(c);
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if (PIN_EINK_CS >= 0)
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digitalWrite(PIN_EINK_CS, HIGH);
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if (PIN_EINK_DC >= 0)
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digitalWrite(PIN_EINK_DC, HIGH);
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SPI.endTransaction();
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}
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void d_writeData(uint8_t d)
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{
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SPI.beginTransaction(SPISettings(4000000, MSBFIRST, SPI_MODE0));
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if (PIN_EINK_CS >= 0)
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digitalWrite(PIN_EINK_CS, LOW);
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SPI.transfer(d);
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if (PIN_EINK_CS >= 0)
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digitalWrite(PIN_EINK_CS, HIGH);
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SPI.endTransaction();
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}
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unsigned long d_waitWhileBusy(uint16_t busy_time)
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{
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if (PIN_EINK_BUSY >= 0) {
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delay(1); // add some margin to become active
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unsigned long start = micros();
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while (1) {
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if (digitalRead(PIN_EINK_BUSY) != HIGH)
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break;
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delay(1);
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if (digitalRead(PIN_EINK_BUSY) != HIGH)
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break;
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if (micros() - start > 10000000)
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break;
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}
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unsigned long elapsed = micros() - start;
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(void)start;
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return elapsed;
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} else
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return busy_time;
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}
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void scanEInkDevice(void)
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{
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SPI.begin();
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d_writeCommand(0x22);
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d_writeData(0x83);
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d_writeCommand(0x20);
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eink_found = (d_waitWhileBusy(150) > 0) ? true : false;
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if (eink_found)
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LOG_DEBUG("EInk display found");
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else
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LOG_DEBUG("EInk display not found");
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SPI.end();
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}
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#endif |