388 lines
9.5 KiB
C
388 lines
9.5 KiB
C
/*****************************************************************************
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* | File : DEV_Config.c
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* | Author : Waveshare team
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* | Function : Hardware underlying interface
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* | Info :
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*----------------
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* | This version: V3.0
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* | Date : 2019-07-31
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* | Info :
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documnetation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of theex Software, and to permit persons to whom the Software is
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# furished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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#
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******************************************************************************/
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#include "DEV_Config.h"
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/**
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* GPIO
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**/
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int EPD_RST_PIN;
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int EPD_DC_PIN;
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int EPD_CS_PIN;
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int EPD_BUSY_PIN;
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int EPD_PWR_PIN;
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/**
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* GPIO read and write
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**/
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void DEV_Digital_Write(UWORD Pin, UBYTE Value)
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{
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#ifdef RPI
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#ifdef USE_BCM2835_LIB
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bcm2835_gpio_write(Pin, Value);
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#elif USE_WIRINGPI_LIB
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digitalWrite(Pin, Value);
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#elif USE_DEV_LIB
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SYSFS_GPIO_Write(Pin, Value);
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#endif
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#endif
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#ifdef JETSON
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#ifdef USE_DEV_LIB
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SYSFS_GPIO_Write(Pin, Value);
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#elif USE_HARDWARE_LIB
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Debug("not support");
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#endif
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#endif
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}
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UBYTE DEV_Digital_Read(UWORD Pin)
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{
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UBYTE Read_value = 0;
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#ifdef RPI
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#ifdef USE_BCM2835_LIB
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Read_value = bcm2835_gpio_lev(Pin);
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#elif USE_WIRINGPI_LIB
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Read_value = digitalRead(Pin);
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#elif USE_DEV_LIB
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Read_value = SYSFS_GPIO_Read(Pin);
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#endif
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#endif
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#ifdef JETSON
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#ifdef USE_DEV_LIB
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Read_value = SYSFS_GPIO_Read(Pin);
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#elif USE_HARDWARE_LIB
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Debug("not support");
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#endif
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#endif
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return Read_value;
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}
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/**
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* SPI
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**/
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void DEV_SPI_WriteByte(uint8_t Value)
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{
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#ifdef RPI
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#ifdef USE_BCM2835_LIB
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bcm2835_spi_transfer(Value);
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#elif USE_WIRINGPI_LIB
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wiringPiSPIDataRW(0,&Value,1);
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#elif USE_DEV_LIB
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DEV_HARDWARE_SPI_TransferByte(Value);
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#endif
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#endif
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#ifdef JETSON
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#ifdef USE_DEV_LIB
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SYSFS_software_spi_transfer(Value);
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#elif USE_HARDWARE_LIB
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Debug("not support");
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#endif
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#endif
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}
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void DEV_SPI_Write_nByte(uint8_t *pData, uint32_t Len)
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{
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#ifdef RPI
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#ifdef USE_BCM2835_LIB
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char rData[Len];
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bcm2835_spi_transfernb((char *)pData,rData,Len);
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#elif USE_WIRINGPI_LIB
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wiringPiSPIDataRW(0, pData, Len);
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#elif USE_DEV_LIB
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DEV_HARDWARE_SPI_Transfer(pData, Len);
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#endif
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#endif
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#ifdef JETSON
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#ifdef USE_DEV_LIB
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//JETSON nano waits for hardware SPI
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Debug("not support");
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#elif USE_HARDWARE_LIB
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Debug("not support");
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#endif
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#endif
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}
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/**
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* GPIO Mode
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**/
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void DEV_GPIO_Mode(UWORD Pin, UWORD Mode)
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{
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#ifdef RPI
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#ifdef USE_BCM2835_LIB
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if(Mode == 0 || Mode == BCM2835_GPIO_FSEL_INPT) {
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bcm2835_gpio_fsel(Pin, BCM2835_GPIO_FSEL_INPT);
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} else {
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bcm2835_gpio_fsel(Pin, BCM2835_GPIO_FSEL_OUTP);
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}
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#elif USE_WIRINGPI_LIB
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if(Mode == 0 || Mode == INPUT) {
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pinMode(Pin, INPUT);
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pullUpDnControl(Pin, PUD_UP);
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} else {
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pinMode(Pin, OUTPUT);
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// Debug (" %d OUT \r\n",Pin);
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}
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#elif USE_DEV_LIB
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SYSFS_GPIO_Export(Pin);
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if(Mode == 0 || Mode == SYSFS_GPIO_IN) {
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SYSFS_GPIO_Direction(Pin, SYSFS_GPIO_IN);
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// Debug("IN Pin = %d\r\n",Pin);
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} else {
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SYSFS_GPIO_Direction(Pin, SYSFS_GPIO_OUT);
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// Debug("OUT Pin = %d\r\n",Pin);
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}
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#endif
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#endif
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#ifdef JETSON
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#ifdef USE_DEV_LIB
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SYSFS_GPIO_Export(Pin);
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SYSFS_GPIO_Direction(Pin, Mode);
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#elif USE_HARDWARE_LIB
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Debug("not support");
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#endif
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#endif
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}
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/**
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* delay x ms
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**/
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void DEV_Delay_ms(UDOUBLE xms)
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{
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#ifdef RPI
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#ifdef USE_BCM2835_LIB
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bcm2835_delay(xms);
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#elif USE_WIRINGPI_LIB
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delay(xms);
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#elif USE_DEV_LIB
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UDOUBLE i;
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for(i=0; i < xms; i++) {
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usleep(1000);
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}
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#endif
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#endif
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#ifdef JETSON
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UDOUBLE i;
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for(i=0; i < xms; i++) {
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usleep(1000);
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}
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#endif
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}
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static int DEV_Equipment_Testing(void)
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{
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FILE *fp;
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char issue_str[64];
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fp = fopen("/etc/issue", "r");
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if (fp == NULL) {
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Debug("Unable to open /etc/issue");
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return -1;
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}
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if (fread(issue_str, 1, sizeof(issue_str), fp) <= 0) {
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Debug("Unable to read from /etc/issue");
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return -1;
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}
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issue_str[sizeof(issue_str)-1] = '\0';
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fclose(fp);
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printf("Current environment: ");
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#ifdef RPI
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char systems[][9] = {"Raspbian", "Debian", "NixOS"};
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int detected = 0;
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for(int i=0; i<3; i++) {
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if (strstr(issue_str, systems[i]) != NULL) {
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printf("%s\n", systems[i]);
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detected = 1;
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}
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}
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if (!detected) {
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printf("not recognized\n");
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printf("Built for Raspberry Pi, but unable to detect environment.\n");
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printf("Perhaps you meant to 'make JETSON' instead?\n");
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return -1;
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}
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#endif
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#ifdef JETSON
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char system[] = {"Ubuntu"};
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if (strstr(issue_str, system) != NULL) {
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printf("%s\n", system);
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} else {
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printf("not recognized\n");
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printf("Built for Jetson, but unable to detect environment.\n");
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printf("Perhaps you meant to 'make RPI' instead?\n");
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return -1;
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}
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#endif
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return 0;
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}
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void DEV_GPIO_Init(void)
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{
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#ifdef RPI
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EPD_RST_PIN = 17;
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EPD_DC_PIN = 25;
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EPD_CS_PIN = 8;
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EPD_PWR_PIN = 18;
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EPD_BUSY_PIN = 24;
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#elif JETSON
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EPD_RST_PIN = GPIO17;
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EPD_DC_PIN = GPIO25;
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EPD_CS_PIN = SPI0_CS0;
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EPD_PWR_PIN = GPIO18;
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EPD_BUSY_PIN = GPIO24;
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#endif
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DEV_GPIO_Mode(EPD_RST_PIN, 1);
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DEV_GPIO_Mode(EPD_DC_PIN, 1);
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DEV_GPIO_Mode(EPD_CS_PIN, 1);
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DEV_GPIO_Mode(EPD_PWR_PIN, 1);
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DEV_GPIO_Mode(EPD_BUSY_PIN, 0);
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DEV_Digital_Write(EPD_CS_PIN, 1);
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DEV_Digital_Write(EPD_PWR_PIN, 1);
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}
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/******************************************************************************
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function: Module Initialize, the 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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UBYTE DEV_Module_Init(void)
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{
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printf("/***********************************/ \r\n");
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if(DEV_Equipment_Testing() < 0) {
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return 1;
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}
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#ifdef RPI
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#ifdef USE_BCM2835_LIB
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if(!bcm2835_init()) {
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printf("bcm2835 init failed !!! \r\n");
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return 1;
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} else {
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printf("bcm2835 init success !!! \r\n");
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}
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// GPIO Config
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DEV_GPIO_Init();
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bcm2835_spi_begin(); //Start spi interface, set spi pin for the reuse function
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bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST); //High first transmission
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bcm2835_spi_setDataMode(BCM2835_SPI_MODE0); //spi mode 0
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bcm2835_spi_setClockDivider(BCM2835_SPI_CLOCK_DIVIDER_128); //Frequency
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bcm2835_spi_chipSelect(BCM2835_SPI_CS0); //set CE0
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bcm2835_spi_setChipSelectPolarity(BCM2835_SPI_CS0, LOW); //enable cs0
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#elif USE_WIRINGPI_LIB
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//if(wiringPiSetup() < 0)//use wiringpi Pin number table
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if(wiringPiSetupGpio() < 0) { //use BCM2835 Pin number table
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printf("set wiringPi lib failed !!! \r\n");
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return 1;
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} else {
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printf("set wiringPi lib success !!! \r\n");
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}
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// GPIO Config
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DEV_GPIO_Init();
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wiringPiSPISetup(0,10000000);
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// wiringPiSPISetupMode(0, 32000000, 0);
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#elif USE_DEV_LIB
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printf("Write and read /dev/spidev0.0 \r\n");
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DEV_GPIO_Init();
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DEV_HARDWARE_SPI_begin("/dev/spidev0.0");
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DEV_HARDWARE_SPI_setSpeed(10000000);
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#endif
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#elif JETSON
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#ifdef USE_DEV_LIB
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DEV_GPIO_Init();
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printf("Software spi\r\n");
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SYSFS_software_spi_begin();
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SYSFS_software_spi_setBitOrder(SOFTWARE_SPI_MSBFIRST);
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SYSFS_software_spi_setDataMode(SOFTWARE_SPI_Mode0);
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SYSFS_software_spi_setClockDivider(SOFTWARE_SPI_CLOCK_DIV4);
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#elif USE_HARDWARE_LIB
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printf("Write and read /dev/spidev0.0 \r\n");
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DEV_GPIO_Init();
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DEV_HARDWARE_SPI_begin("/dev/spidev0.0");
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#endif
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#endif
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printf("/***********************************/ \r\n");
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return 0;
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}
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/******************************************************************************
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function: Module exits, closes SPI and BCM2835 library
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parameter:
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Info:
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******************************************************************************/
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void DEV_Module_Exit(void)
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{
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#ifdef RPI
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#ifdef USE_BCM2835_LIB
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DEV_Digital_Write(EPD_CS_PIN, LOW);
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DEV_Digital_Write(EPD_PWR_PIN, LOW);
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DEV_Digital_Write(EPD_DC_PIN, LOW);
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DEV_Digital_Write(EPD_RST_PIN, LOW);
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bcm2835_spi_end();
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bcm2835_close();
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#elif USE_WIRINGPI_LIB
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DEV_Digital_Write(EPD_CS_PIN, 0);
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DEV_Digital_Write(EPD_PWR_PIN, 0);
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DEV_Digital_Write(EPD_DC_PIN, 0);
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DEV_Digital_Write(EPD_RST_PIN, 0);
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#elif USE_DEV_LIB
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DEV_HARDWARE_SPI_end();
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DEV_Digital_Write(EPD_CS_PIN, 0);
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DEV_Digital_Write(EPD_PWR_PIN, 0);
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DEV_Digital_Write(EPD_DC_PIN, 0);
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DEV_Digital_Write(EPD_RST_PIN, 0);
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#endif
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#elif JETSON
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#ifdef USE_DEV_LIB
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SYSFS_GPIO_Unexport(EPD_CS_PIN);
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SYSFS_GPIO_Unexport(EPD_PWR_PIN;
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SYSFS_GPIO_Unexport(EPD_DC_PIN);
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SYSFS_GPIO_Unexport(EPD_RST_PIN);
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SYSFS_GPIO_Unexport(EPD_BUSY_PIN);
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#elif USE_HARDWARE_LIB
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Debug("not support");
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#endif
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#endif
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}
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