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Revert "Merge branch 'feature/vfs_select' into 'master'"

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This reverts merge request !2074
This commit is contained in:
Ivan Grokhotkov
2018-04-20 11:51:41 +08:00
parent 5d3b26e8d0
commit 6185e722c3
26 changed files with 129 additions and 1176 deletions
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90
examples/peripherals/uart_select/main/uart_select_example_main.c
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@@ -1,90 +0,0 @@
/* UART Select Example
This example code is in the Public Domain (or CC0 licensed, at your option.)
Unless required by applicable law or agreed to in writing, this
software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied.
*/
#include <stdio.h>
#include <sys/fcntl.h>
#include <sys/errno.h>
#include <sys/unistd.h>
#include <sys/select.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_log.h"
#include "esp_vfs.h"
#include "esp_vfs_dev.h"
#include "driver/uart.h"
static const char* TAG = "uart_select_example";
static void uart_select_task()
{
uart_config_t uart_config = {
.baud_rate = 115200,
.data_bits = UART_DATA_8_BITS,
.parity = UART_PARITY_DISABLE,
.stop_bits = UART_STOP_BITS_1,
.flow_ctrl = UART_HW_FLOWCTRL_DISABLE
};
uart_param_config(UART_NUM_0, &uart_config);
uart_driver_install(UART_NUM_0, 2*1024, 0, 0, NULL, 0);
while (1) {
int fd;
if ((fd = open("/dev/uart/0", O_RDWR)) == -1) {
ESP_LOGE(TAG, "Cannot open UART");
vTaskDelay(5000 / portTICK_PERIOD_MS);
continue;
}
// We have a driver now installed so set up the read/write functions to use driver also.
esp_vfs_dev_uart_use_driver(fd);
while (1) {
int s;
fd_set rfds;
struct timeval tv = {
.tv_sec = 5,
.tv_usec = 0,
};
FD_ZERO(&rfds);
FD_SET(fd, &rfds);
s = select(fd + 1, &rfds, NULL, NULL, &tv);
if (s < 0) {
ESP_LOGE(TAG, "Select failed: errno %d", errno);
break;
} else if (s == 0) {
ESP_LOGI(TAG, "Timeout has been reached and nothing has been received");
} else {
if (FD_ISSET(fd, &rfds)) {
char buf;
if (read(fd, &buf, 1) > 0) {
ESP_LOGI(TAG, "Received: %c", buf);
} else {
ESP_LOGE(TAG, "UART read error");
break;
}
} else {
ESP_LOGE(TAG, "No FD has been set in select()");
break;
}
}
}
close(fd);
}
vTaskDelete(NULL);
}
void app_main()
{
xTaskCreate(uart_select_task, "uart_select_task", 4*1024, NULL, 5, NULL);
}