e-paper-display/bcm2835-1.71/e-Paper/RaspberryPi_JetsonNano/c/lib/Config/DEV_Config.c

388 lines
9.5 KiB
C

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