47 lines
1.3 KiB
C++
47 lines
1.3 KiB
C++
#include "epd_cfg.h"
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void GPIO_Config(void) {
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pinMode(EPD_BUSY_PIN, INPUT);
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pinMode(EPD_RST_PIN, OUTPUT);
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pinMode(EPD_DC_PIN, OUTPUT);
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pinMode(EPD_SCK_PIN, OUTPUT);
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pinMode(EPD_MOSI_PIN, OUTPUT);
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pinMode(EPD_CS_PIN, OUTPUT);
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digitalWrite(EPD_CS_PIN, HIGH);
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digitalWrite(EPD_SCK_PIN, LOW);
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}
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/******************************************************************************
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function: Module Initialize, the BCM2835 library and initialize the pins, SPI protocol
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parameter:
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Info:
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******************************************************************************/
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uint8_t DEV_Module_Init(void) {
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GPIO_Config();
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#ifdef USE_DEBUG
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Serial.begin(115200);
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#endif
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return 0;
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}
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/******************************************************************************
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function:
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SPI read and write
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******************************************************************************/
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void DEV_SPI_WriteByte(uint8_t data) {
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digitalWrite(EPD_CS_PIN, GPIO_PIN_RESET);
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for (int i = 0; i < 8; i++) {
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if ((data & 0x80) == 0) digitalWrite(EPD_MOSI_PIN, GPIO_PIN_RESET);
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else digitalWrite(EPD_MOSI_PIN, GPIO_PIN_SET);
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data <<= 1;
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digitalWrite(EPD_SCK_PIN, GPIO_PIN_SET);
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digitalWrite(EPD_SCK_PIN, GPIO_PIN_RESET);
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}
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digitalWrite(EPD_CS_PIN, GPIO_PIN_SET);
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}
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