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OVMS3-idf/components/vfs/test/test_vfs_uart.c

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// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <sys/termios.h>
#include <sys/errno.h>
#include "unity.h"
#include "rom/uart.h"
#include "soc/uart_struct.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/semphr.h"
#include "driver/uart.h"
#include "esp_vfs_dev.h"
#include "esp_vfs.h"
#include "sdkconfig.h"
static void fwrite_str_loopback(const char* str, size_t size)
{
uart_tx_wait_idle(CONFIG_CONSOLE_UART_NUM);
UART0.conf0.loopback = 1;
fwrite(str, 1, size, stdout);
fflush(stdout);
uart_tx_wait_idle(CONFIG_CONSOLE_UART_NUM);
vTaskDelay(2 / portTICK_PERIOD_MS);
UART0.conf0.loopback = 0;
}
static void flush_stdin_stdout()
{
vTaskDelay(10 / portTICK_PERIOD_MS);
char *bitbucket = (char*) 0x3f000000;
while (fread(bitbucket, 1, 128, stdin) > 0) {
;
}
fflush(stdout);
uart_tx_wait_idle(CONFIG_CONSOLE_UART_NUM);
}
TEST_CASE("can read from stdin", "[vfs]")
{
flush_stdin_stdout();
const size_t count = 12;
srand(count);
char* data = (char*) calloc(1, count * 8 + 2);
char* buf = (char*) calloc(1, count * 8 + 2);
char* p = data;
for (size_t i = 0; i < count; ++i) {
p += sprintf(p, "%08x", rand());
}
p += sprintf(p, "\n");
size_t len = p - data;
fwrite_str_loopback(data, len);
size_t cb = fread(buf, 1, len, stdin);
TEST_ASSERT_EQUAL(len, cb);
TEST_ASSERT_EQUAL_UINT8_ARRAY(data, buf, len);
free(data);
free(buf);
}
TEST_CASE("CRs are removed from the stdin correctly", "[vfs]")
{
esp_vfs_dev_uart_port_set_rx_line_endings(CONFIG_CONSOLE_UART_NUM, ESP_LINE_ENDINGS_CRLF);
esp_vfs_dev_uart_port_set_tx_line_endings(CONFIG_CONSOLE_UART_NUM, ESP_LINE_ENDINGS_CRLF);
flush_stdin_stdout();
const char* send_str = "1234567890\n\r123\r\n4\n";
/* with CONFIG_NEWLIB_STDOUT_ADDCR, the following will be sent on the wire.
* (last character of each part is marked with a hat)
*
* 1234567890\r\n\r123\r\r\n4\r\n
* ^ ^^ ^
*/
char buf[128];
char* dst = buf;
fwrite_str_loopback(send_str, 11); // send up to the first \n
size_t rb = fread(dst, 1, 5, stdin); // read first 5
TEST_ASSERT_EQUAL(5, rb);
dst += rb;
rb = fread(dst, 1, 6, stdin); // ask for 6
TEST_ASSERT_EQUAL(6, rb); // get 6
TEST_ASSERT_EQUAL_UINT8_ARRAY("1234567890\n", buf, 11);
dst += rb;
rb = fread(dst, 1, 2, stdin); // any more characters?
TEST_ASSERT_EQUAL(0, rb); // nothing
fwrite_str_loopback(send_str + 11, 1); // send the '\r'
vTaskDelay(10 / portTICK_PERIOD_MS);
rb = fread(dst, 1, 2, stdin); // try to get somthing
TEST_ASSERT_EQUAL(0, rb); // still nothing (\r is buffered)
fwrite_str_loopback(send_str + 12, 1); // Now send the '1'
vTaskDelay(10 / portTICK_PERIOD_MS);
rb = fread(dst, 1, 2, stdin); // try again
TEST_ASSERT_EQUAL(2, rb); // get two characters
TEST_ASSERT_EQUAL_UINT8_ARRAY("\r1", dst, 2);
dst += rb;
fwrite_str_loopback(send_str + 13, 6); // Send the rest
vTaskDelay(10 / portTICK_PERIOD_MS);
rb = fread(dst, 1, 4, stdin); // consume "23\r\n"
TEST_ASSERT_EQUAL(4, rb);
TEST_ASSERT_EQUAL_UINT8_ARRAY("23\r\n", dst, 4);
dst += rb;
rb = fread(dst, 1, 4, stdin); // ask for more than the remainder
TEST_ASSERT_EQUAL(2, rb);
TEST_ASSERT_EQUAL_UINT8_ARRAY("4\n", dst, 2);
}
TEST_CASE("can write to UART while another task is reading", "[vfs]")
{
struct read_task_arg_t {
char* out_buffer;
size_t out_buffer_len;
SemaphoreHandle_t ready;
SemaphoreHandle_t done;
};
struct write_task_arg_t {
const char* str;
SemaphoreHandle_t done;
};
void read_task_fn(void* varg)
{
struct read_task_arg_t* parg = (struct read_task_arg_t*) varg;
parg->out_buffer[0] = 0;
fgets(parg->out_buffer, parg->out_buffer_len, stdin);
xSemaphoreGive(parg->done);
vTaskDelete(NULL);
}
void write_task_fn(void* varg)
{
struct write_task_arg_t* parg = (struct write_task_arg_t*) varg;
fwrite_str_loopback(parg->str, strlen(parg->str));
xSemaphoreGive(parg->done);
vTaskDelete(NULL);
}
char out_buffer[32];
size_t out_buffer_len = sizeof(out_buffer);
struct read_task_arg_t read_arg = {
.out_buffer = out_buffer,
.out_buffer_len = out_buffer_len,
.done = xSemaphoreCreateBinary()
};
struct write_task_arg_t write_arg = {
.str = "!(@*#&(!*@&#((SDasdkjhadsl\n",
.done = xSemaphoreCreateBinary()
};
flush_stdin_stdout();
ESP_ERROR_CHECK( uart_driver_install(CONFIG_CONSOLE_UART_NUM,
256, 0, 0, NULL, 0) );
esp_vfs_dev_uart_use_driver(CONFIG_CONSOLE_UART_NUM);
xTaskCreate(&read_task_fn, "vfs_read", 4096, &read_arg, 5, NULL);
vTaskDelay(10);
xTaskCreate(&write_task_fn, "vfs_write", 4096, &write_arg, 6, NULL);
int res = xSemaphoreTake(write_arg.done, 100 / portTICK_PERIOD_MS);
TEST_ASSERT(res);
res = xSemaphoreTake(read_arg.done, 100 / portTICK_PERIOD_MS);
TEST_ASSERT(res);
TEST_ASSERT_EQUAL(0, strcmp(write_arg.str, read_arg.out_buffer));
esp_vfs_dev_uart_use_nonblocking(CONFIG_CONSOLE_UART_NUM);
uart_driver_delete(CONFIG_CONSOLE_UART_NUM);
vSemaphoreDelete(read_arg.done);
vSemaphoreDelete(write_arg.done);
}
#ifdef CONFIG_SUPPORT_TERMIOS
TEST_CASE("Can use termios for UART", "[vfs]")
{
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_1, &uart_config);
uart_driver_install(UART_NUM_1, 256, 256, 0, NULL, 0);
const int uart_fd = open("/dev/uart/1", O_RDWR);
TEST_ASSERT_NOT_EQUAL_MESSAGE(uart_fd, -1, "Cannot open UART");
esp_vfs_dev_uart_use_driver(1);
TEST_ASSERT_EQUAL(-1, tcgetattr(uart_fd, NULL));
TEST_ASSERT_EQUAL(EINVAL, errno);
struct termios tios, tios_result;
TEST_ASSERT_EQUAL(-1, tcgetattr(-1, &tios));
TEST_ASSERT_EQUAL(EBADF, errno);
TEST_ASSERT_EQUAL(0, tcgetattr(uart_fd, &tios));
TEST_ASSERT_EQUAL(0, tcsetattr(uart_fd, TCSADRAIN, &tios));
TEST_ASSERT_EQUAL(0, tcsetattr(uart_fd, TCSAFLUSH, &tios));
tios.c_iflag |= IGNCR;
TEST_ASSERT_EQUAL(0, tcsetattr(uart_fd, TCSANOW, &tios));
tios.c_iflag &= (~IGNCR);
TEST_ASSERT_EQUAL(0, tcgetattr(uart_fd, &tios_result));
TEST_ASSERT_EQUAL(IGNCR, tios_result.c_iflag & IGNCR);
memset(&tios_result, 0xFF, sizeof(struct termios));
tios.c_iflag |= ICRNL;
TEST_ASSERT_EQUAL(0, tcsetattr(uart_fd, TCSANOW, &tios));
tios.c_iflag &= (~ICRNL);
TEST_ASSERT_EQUAL(0, tcgetattr(uart_fd, &tios_result));
TEST_ASSERT_EQUAL(ICRNL, tios_result.c_iflag & ICRNL);
memset(&tios_result, 0xFF, sizeof(struct termios));
{
uart_word_length_t data_bit;
uart_stop_bits_t stop_bits;
uart_parity_t parity_mode;
tios.c_cflag &= (~CSIZE);
tios.c_cflag &= (~CSTOPB);
tios.c_cflag &= (~PARENB);
tios.c_cflag |= CS6;
TEST_ASSERT_EQUAL(0, tcsetattr(uart_fd, TCSANOW, &tios));
tios.c_cflag &= (~CSIZE);
TEST_ASSERT_EQUAL(0, tcgetattr(uart_fd, &tios_result));
TEST_ASSERT_EQUAL(CS6, tios_result.c_cflag & CS6);
TEST_ASSERT_EQUAL(ESP_OK, uart_get_word_length(UART_NUM_1, &data_bit));
TEST_ASSERT_EQUAL(UART_DATA_6_BITS, data_bit);
TEST_ASSERT_EQUAL(0, tios_result.c_cflag & CSTOPB);
TEST_ASSERT_EQUAL(ESP_OK, uart_get_stop_bits(UART_NUM_1, &stop_bits));
TEST_ASSERT_EQUAL(UART_STOP_BITS_1, stop_bits);
TEST_ASSERT_EQUAL(ESP_OK, uart_get_parity(UART_NUM_1, &parity_mode));
TEST_ASSERT_EQUAL(UART_PARITY_DISABLE, parity_mode);
memset(&tios_result, 0xFF, sizeof(struct termios));
}
{
uart_stop_bits_t stop_bits;
uart_parity_t parity_mode;
tios.c_cflag |= CSTOPB;
tios.c_cflag |= (PARENB | PARODD);
TEST_ASSERT_EQUAL(0, tcsetattr(uart_fd, TCSANOW, &tios));
tios.c_cflag &= (~(CSTOPB | PARENB | PARODD));
TEST_ASSERT_EQUAL(0, tcgetattr(uart_fd, &tios_result));
TEST_ASSERT_EQUAL(CSTOPB, tios_result.c_cflag & CSTOPB);
TEST_ASSERT_EQUAL(ESP_OK, uart_get_stop_bits(UART_NUM_1, &stop_bits));
TEST_ASSERT_EQUAL(UART_STOP_BITS_2, stop_bits);
TEST_ASSERT_EQUAL(ESP_OK, uart_get_parity(UART_NUM_1, &parity_mode));
TEST_ASSERT_EQUAL(UART_PARITY_ODD, parity_mode);
memset(&tios_result, 0xFF, sizeof(struct termios));
}
{
uint32_t baudrate;
tios.c_cflag &= (~BOTHER);
tios.c_cflag |= CBAUD;
tios.c_ispeed = tios.c_ospeed = B38400;
TEST_ASSERT_EQUAL(0, tcsetattr(uart_fd, TCSANOW, &tios));
TEST_ASSERT_EQUAL(0, tcgetattr(uart_fd, &tios_result));
TEST_ASSERT_EQUAL(CBAUD, tios_result.c_cflag & CBAUD);
TEST_ASSERT_EQUAL(B38400, tios_result.c_ispeed);
TEST_ASSERT_EQUAL(B38400, tios_result.c_ospeed);
TEST_ASSERT_EQUAL(ESP_OK, uart_get_baudrate(UART_NUM_1, &baudrate));
TEST_ASSERT_EQUAL(38400, baudrate);
tios.c_cflag |= CBAUDEX;
tios.c_ispeed = tios.c_ospeed = B230400;
TEST_ASSERT_EQUAL(0, tcsetattr(uart_fd, TCSANOW, &tios));
TEST_ASSERT_EQUAL(0, tcgetattr(uart_fd, &tios_result));
TEST_ASSERT_EQUAL(BOTHER, tios_result.c_cflag & BOTHER);
// Setting the speed to 230400 will set it actually to 230423
TEST_ASSERT_EQUAL(230423, tios_result.c_ispeed);
TEST_ASSERT_EQUAL(230423, tios_result.c_ospeed);
TEST_ASSERT_EQUAL(ESP_OK, uart_get_baudrate(UART_NUM_1, &baudrate));
TEST_ASSERT_EQUAL(230423, baudrate);
tios.c_cflag |= BOTHER;
tios.c_ispeed = tios.c_ospeed = 213;
TEST_ASSERT_EQUAL(0, tcsetattr(uart_fd, TCSANOW, &tios));
TEST_ASSERT_EQUAL(0, tcgetattr(uart_fd, &tios_result));
TEST_ASSERT_EQUAL(BOTHER, tios_result.c_cflag & BOTHER);
TEST_ASSERT_EQUAL(213, tios_result.c_ispeed);
TEST_ASSERT_EQUAL(213, tios_result.c_ospeed);
TEST_ASSERT_EQUAL(ESP_OK, uart_get_baudrate(UART_NUM_1, &baudrate));
TEST_ASSERT_EQUAL(213, baudrate);
memset(&tios_result, 0xFF, sizeof(struct termios));
}
esp_vfs_dev_uart_use_nonblocking(1);
close(uart_fd);
uart_driver_delete(UART_NUM_1);
}
#endif // CONFIG_SUPPORT_TERMIOS
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