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https://x509p6c8to.feishu.cn/docx/doxcnNDtfnJnoQ6Wd17bq19aEZJ
/home/kemp/work/esp/esp-idf/examples/peripherals/gpio
源码下载方式参考：
GPIO & RTC GPIO - - ‒ ESP-IDF 编程指南 release-v4.1 文档
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/queue.h"
#include "driver/gpio.h"
#include "ds_gpio.h"
#include "ds_system_data.h"
/**
* GPIO status:
* GPIO5: output
* GPIO4: input, pulled up, interrupt from rising edge
*/
#define GPIO_OUTPUT_IO_0 5
#define GPIO_OUTPUT_PIN_SEL ((1ULL<<GPIO_OUTPUT_IO_0))
#define GPIO_INPUT_IO_0 34
#define GPIO_INPUT_PIN_SEL ((1ULL<<GPIO_INPUT_IO_0))
#define ESP_INTR_FLAG_DEFAULT 0
//屏幕片选 0-有效
#define SCREEN_GPIO_OUTPUT_CS 27
#define SCREEN_GPIO_OUTPUT_CS_SEL ((1ULL<<SCREEN_GPIO_OUTPUT_CS))
//屏幕数据/指令选择 1-data 0-cmd
#define SCREEN_GPIO_OUTPUT_DC 14
#define SCREEN_GPIO_OUTPUT_DC_SEL ((1ULL<<SCREEN_GPIO_OUTPUT_DC))
//屏幕复位 0-reset
#define SCREEN_GPIO_OUTPUT_RES 12
#define SCREEN_GPIO_OUTPUT_RES_SEL ((1ULL<<SCREEN_GPIO_OUTPUT_RES))
//屏幕状态 1-busy
#define SCREEN_GPIO_INTPUT_BUSY 13
#define SCREEN_GPIO_INTPUT_BUSY_SEL ((1ULL<<SCREEN_GPIO_INTPUT_BUSY))
static xQueueHandle gpio_evt_queue = NULL;
static void IRAM_ATTR gpio_isr_handler(void* arg)
{
uint32_t gpio_num = (uint32_t) arg;
xQueueSendFromISR(gpio_evt_queue, &gpio_num, NULL);
}
static void gpio_task_example(void* arg)
{
uint32_t io_num;
for(;;) {
if(xQueueReceive(gpio_evt_queue, &io_num, portMAX_DELAY)) {
printf("GPIO[%d] intr, val: %d\n", io_num, gpio_get_level(io_num));
}
}
}
void ds_touch_gpio_init(){
gpio_config_t io_conf;
//disable interrupt
io_conf.intr_type = GPIO_PIN_INTR_DISABLE;
//set as output mode
io_conf.mode = GPIO_MODE_OUTPUT;
//bit mask of the pins that you want to set,e.g.GPIO18/19
io_conf.pin_bit_mask = GPIO_OUTPUT_PIN_SEL;
//disable pull-down mode
io_conf.pull_down_en = 0;
//disable pull-up mode
io_conf.pull_up_en = 0;
//configure GPIO with the given settings
gpio_config(&io_conf);
//GPIO interrupt type : both rising and falling edge
io_conf.intr_type = GPIO_INTR_ANYEDGE;
//bit mask of the pins, use GPIO4/5 here
io_conf.pin_bit_mask = GPIO_INPUT_PIN_SEL;
//set as input mode
io_conf.mode = GPIO_MODE_INPUT;
//enable pull-up mode
io_conf.pull_up_en = 1;
gpio_config(&io_conf);
//change gpio intrrupt type for one pin
// gpio_set_intr_type(GPIO_INPUT_IO_0, GPIO_INTR_NEGEDGE);
//create a queue to handle gpio event from isr
gpio_evt_queue = xQueueCreate(10, sizeof(uint32_t));
//start gpio task
xTaskCreate(gpio_task_example, "gpio_task_example", 2048, NULL, 10, NULL);
//install gpio isr service
gpio_install_isr_service(ESP_INTR_FLAG_DEFAULT);
//hook isr handler for specific gpio pin
gpio_isr_handler_add(GPIO_INPUT_IO_0, gpio_isr_handler, (void*) GPIO_INPUT_IO_0);
}
void ds_screen_gpio_init(){
gpio_config_t io_conf;
//disable interrupt
io_conf.intr_type = GPIO_PIN_INTR_DISABLE;
//set as output mode
io_conf.mode = GPIO_MODE_OUTPUT;
//bit mask of the pins that you want to set,e.g.GPIO18/19
io_conf.pin_bit_mask = SCREEN_GPIO_OUTPUT_CS_SEL;
//disable pull-down mode
io_conf.pull_down_en = 0;
//disable pull-up mode
io_conf.pull_up_en = 0;
//configure GPIO with the given settings
gpio_config(&io_conf);
//bit mask of the pins that you want to set,e.g.GPIO18/19
io_conf.pin_bit_mask = SCREEN_GPIO_OUTPUT_DC_SEL;
//configure GPIO with the given settings
gpio_config(&io_conf);
//bit mask of the pins that you want to set,e.g.GPIO18/19
io_conf.pin_bit_mask = SCREEN_GPIO_OUTPUT_RES_SEL;
//configure GPIO with the given settings
gpio_config(&io_conf);
io_conf.intr_type = GPIO_INTR_NEGEDGE;
//bit mask of the pins, use GPIO4/5 here
io_conf.pin_bit_mask = SCREEN_GPIO_INTPUT_BUSY_SEL;
//set as input mode
io_conf.mode = GPIO_MODE_INPUT;
//enable pull-up mode
io_conf.pull_up_en = 0;
gpio_config(&io_conf);
//change gpio intrrupt type for one pin
// gpio_set_intr_type(SCREEN_GPIO_INTPUT_BUSY, GPIO_INTR_NEGEDGE);
//install gpio isr service
gpio_install_isr_service(ESP_INTR_FLAG_DEFAULT);
//hook isr handler for specific gpio pin
gpio_isr_handler_add(SCREEN_GPIO_INTPUT_BUSY, gpio_isr_handler, (void*) SCREEN_GPIO_INTPUT_BUSY);
}
void ds_gpio_init(){
ds_touch_gpio_init();
}
void ds_gpio_set_screen_cs(uint32_t level){
gpio_set_level(SCREEN_GPIO_OUTPUT_CS, level);
}
void ds_gpio_set_screen_dc(uint32_t level){
gpio_set_level(SCREEN_GPIO_OUTPUT_DC, level);
}
void ds_gpio_set_screen_rst(uint32_t level){
gpio_set_level(SCREEN_GPIO_OUTPUT_RES, level);
}
int ds_gpio_get_screen_busy(){
return gpio_get_level(SCREEN_GPIO_INTPUT_BUSY);
}
void ds_gpio_set_touch_rst(uint32_t level){
gpio_set_level(GPIO_OUTPUT_IO_0, level);
}