Initial commit

EPD/DEV_Config.c

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+/*****************************************************************************
+* | File        : DEV_Config.cpp
+* | Author      : Waveshare team
+* | Function    :
+* | Info        :
+*   Image scanning
+*      Please use progressive scanning to generate images or fonts
+*----------------
+* | This version:   V1.0
+* | Date        :   2018-01-11
+* | Info        :   Basic version
+*
+******************************************************************************/
+#include "nrf_drv_spi.h"
+#include "DEV_Config.h"
+
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+
+uint32_t EPD_MOSI_PIN = 5;
+uint32_t EPD_SCLK_PIN = 8;
+uint32_t EPD_CS_PIN = 9;
+uint32_t EPD_DC_PIN = 10;
+uint32_t EPD_RST_PIN = 11;
+uint32_t EPD_BUSY_PIN = 12;
+uint32_t EPD_BS_PIN = 13;
+
+static const nrf_drv_spi_t spi = NRF_DRV_SPI_INSTANCE(0);
+
+/******************************************************************************
+function: Initialize Arduino, Initialize Pins, and SPI
+parameter:
+Info:
+******************************************************************************/
+UBYTE DEV_Module_Init(void)
+{
+    nrf_gpio_cfg_output(EPD_CS_PIN);
+    nrf_gpio_cfg_output(EPD_DC_PIN);
+    nrf_gpio_cfg_output(EPD_RST_PIN);
+    nrf_gpio_cfg_input(EPD_BUSY_PIN, NRF_GPIO_PIN_NOPULL);
+
+    nrf_gpio_cfg_output(EPD_BS_PIN);
+    DEV_Digital_Write(EPD_BS_PIN, 0);
+
+    nrf_drv_spi_config_t spi_config =
+    {
+        .sck_pin      = EPD_SCLK_PIN,
+        .mosi_pin     = EPD_MOSI_PIN,
+        .miso_pin     = NRF_DRV_SPI_PIN_NOT_USED,
+        .ss_pin       = NRF_DRV_SPI_PIN_NOT_USED,
+        .frequency    = NRF_DRV_SPI_FREQ_4M,
+        .mode         = NRF_DRV_SPI_MODE_0,
+    };
+    nrf_drv_spi_init(&spi, &spi_config, NULL);
+
+    DEV_Digital_Write(EPD_DC_PIN, 0);
+    DEV_Digital_Write(EPD_CS_PIN, 0);
+    DEV_Digital_Write(EPD_RST_PIN, 1);
+
+    return 0;
+}
+
+/*********************************************
+function: Hardware interface
+note:
+  SPI4W_Write_Byte(value) : 
+    Register hardware SPI
+*********************************************/  
+void DEV_SPI_WriteByte(UBYTE value)
+{
+    nrf_drv_spi_transfer(&spi, &value, 1, NULL, 0);
+}
+
+UBYTE DEV_SPI_ReadByte(void)
+{
+  UBYTE value;
+  nrf_drv_spi_transfer(&spi, NULL, 0, &value, 1);
+  return value;
+}
+
+void DEV_Module_Exit(void)
+{
+    DEV_Digital_Write(EPD_DC_PIN, 0);
+    DEV_Digital_Write(EPD_CS_PIN, 0);
+
+    //close 5V
+    DEV_Digital_Write(EPD_RST_PIN, 0);
+
+    nrf_drv_spi_uninit(&spi);
+}

EPD/DEV_Config.h

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+/*****************************************************************************
+* | File      	: DEV_Config.h
+* | Author      : Waveshare team
+* | Function    :	debug with prntf
+* | Info        :
+*   Image scanning
+*      Please use progressive scanning to generate images or fonts
+*----------------
+* |	This version:   V1.0
+* | Date        :   2018-01-11
+* | Info        :   Basic version
+*
+******************************************************************************/
+#ifndef _DEV_CONFIG_H_
+#define _DEV_CONFIG_H_
+
+#include "nrf_delay.h"
+#include "nrf_gpio.h"
+#include <stdint.h>
+#include <stdlib.h>
+
+/**
+ * data
+**/
+#define UBYTE   uint8_t
+#define UWORD   uint16_t
+#define UDOUBLE uint32_t
+
+extern uint32_t EPD_MOSI_PIN;
+extern uint32_t EPD_SCLK_PIN;
+extern uint32_t EPD_CS_PIN;
+extern uint32_t EPD_DC_PIN;
+extern uint32_t EPD_RST_PIN;
+extern uint32_t EPD_BUSY_PIN;
+extern uint32_t EPD_BS_PIN;
+
+/**
+ * GPIO read and write
+**/
+#define DEV_Digital_Write(_pin, _value) nrf_gpio_pin_write(_pin, _value)
+#define DEV_Digital_Read(_pin) nrf_gpio_pin_read(_pin)
+
+
+/**
+ * delay x ms
+**/
+#define DEV_Delay_ms(__xms) nrf_delay_ms(__xms);
+#define DEV_Delay_us(__xus) nrf_delay_us(__xus);
+
+UBYTE DEV_Module_Init(void);
+void DEV_Module_Exit(void);
+
+void DEV_SPI_WriteByte(UBYTE value);
+UBYTE DEV_SPI_ReadByte(void);
+
+#endif