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Merge branch 'bugfix/driver_rs485_fix_test_sync_issues_v42' into 'release/v4.2'

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driver: uart rs485 fix test sync issues and fail threshold (backport v4.2)

See merge request espressif/esp-idf!19615
This commit is contained in:
morris 2022-09-15 15:23:21 +08:00
commit 949d7da779
1 changed files with 35 additions and 30 deletions
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65
components/driver/test/test_rs485.c
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@ -9,29 +9,30 @@
#include "esp_log.h"
#include "esp_system.h" // for uint32_t esp_random()
#define UART_TAG "Uart"
#define UART_NUM1 (UART_NUM_1)
#define BUF_SIZE (100)
#define UART1_RX_PIN (22)
#define UART1_TX_PIN (23)
#define UART_BAUD_11520 (11520)
#define UART_BAUD_115200 (115200)
#define TOLERANCE (0.02) //baud rate error tolerance 2%.
#define UART_TOLERANCE_CHECK(val, uper_limit, lower_limit) ( (val) <= (uper_limit) && (val) >= (lower_limit) )
#define UART_NUM1 (UART_NUM_1)
#define UART_BAUD_RATE (115200 * 10)
#define BUF_SIZE (512)
#define UART1_RX_PIN (22)
#define UART1_TX_PIN (23)
// RTS for RS485 Half-Duplex Mode manages DE/~RE
#define UART1_RTS_PIN (18)
#define UART1_RTS_PIN (18)
// Number of packets to be send during test
#define PACKETS_NUMBER (10)
#define PACKETS_NUMBER (30)
// Wait timeout for uart driver
#define PACKET_READ_TICS (1000 / portTICK_RATE_MS)
#define PACKET_READ_TICS (2000 / portTICK_PERIOD_MS)
// This is for workarond to avoid master-slave syncronization issues
// when slave gets the "Master_started" signal with delay ~2-3 seconds
#define TEST_ALLOW_PROC_FAIL (10)
#define TEST_CHECK_PROC_FAIL(fails, threshold) TEST_ASSERT((fails * 100 / PACKETS_NUMBER) <= threshold)
#if !TEMPORARY_DISABLED_FOR_TARGETS(ESP32S2)
//No runners
static const char *TAG = "rs485_test";
// The table for fast CRC16 calculation
static const uint8_t crc_hi[] = {
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
@ -153,23 +154,23 @@ static uint16_t buffer_fill_random(uint8_t *buffer, size_t length)
static void rs485_init(void)
{
uart_config_t uart_config = {
.baud_rate = UART_BAUD_115200,
.baud_rate = UART_BAUD_RATE,
.data_bits = UART_DATA_8_BITS,
.parity = UART_PARITY_DISABLE,
.stop_bits = UART_STOP_BITS_1,
.flow_ctrl = UART_HW_FLOWCTRL_DISABLE,
.rx_flow_ctrl_thresh = 122,
};
printf("RS485 port initialization...\r\n");
ESP_LOGI(TAG, "RS485 port initialization...");
TEST_ESP_OK(uart_wait_tx_idle_polling(UART_NUM1));
// Configure UART1 parameters
uart_param_config(UART_NUM1, &uart_config);
// Set UART1 pins(TX: IO4, RX: I05, RTS: IO18, CTS: IO19)
uart_set_pin(UART_NUM1, UART1_TX_PIN, UART1_RX_PIN, UART1_RTS_PIN, UART_PIN_NO_CHANGE);
TEST_ESP_OK(uart_param_config(UART_NUM1, &uart_config));
// Set UART1 pins
TEST_ESP_OK(uart_set_pin(UART_NUM1, UART1_TX_PIN, UART1_RX_PIN, UART1_RTS_PIN, UART_PIN_NO_CHANGE));
// Install UART driver (we don't need an event queue here)
uart_driver_install(UART_NUM1, BUF_SIZE * 2, 0, 0, NULL, 0);
TEST_ESP_OK(uart_driver_install(UART_NUM1, BUF_SIZE * 2, 0, 0, NULL, 0));
// Setup rs485 half duplex mode
//uart_set_rs485_hd_mode(uart_num, true);
uart_set_mode(UART_NUM1, UART_MODE_RS485_HALF_DUPLEX);
TEST_ESP_OK(uart_set_mode(UART_NUM1, UART_MODE_RS485_HALF_DUPLEX));
}
static esp_err_t print_packet_data(const char *str, uint8_t *buffer, uint16_t buffer_size)
@ -199,12 +200,12 @@ static void rs485_slave(void)
rs485_init();
uint8_t* slave_data = (uint8_t*) malloc(BUF_SIZE);
uint16_t err_count = 0, good_count = 0;
printf("Start recieve loop.\r\n");
unity_send_signal("Slave_ready");
unity_wait_for_signal("Master_started");
ESP_LOGI(TAG, "Start recieve loop.");
for(int pack_count = 0; pack_count < PACKETS_NUMBER; pack_count++) {
//Read slave_data from UART
int len = uart_read_bytes(UART_NUM1, slave_data, BUF_SIZE, (PACKET_READ_TICS * 2));
int len = uart_read_bytes(UART_NUM1, slave_data, BUF_SIZE, PACKET_READ_TICS);
//Write slave_data back to UART
if (len > 2) {
esp_err_t status = print_packet_data("Received ", slave_data, len);
@ -212,22 +213,23 @@ static void rs485_slave(void)
// If received packet is correct then send it back
if (status == ESP_OK) {
uart_write_bytes(UART_NUM1, (char*)slave_data, len);
uart_wait_tx_idle_polling(UART_NUM1);
good_count++;
} else {
printf("Incorrect packet received.\r\n");
err_count++;
}
} else {
printf("Incorrect data packet[%d] received.\r\n", pack_count);
printf("Incorrect data packet[%d], data length: %d, received.\r\n", pack_count, len);
err_count++;
}
}
printf("Test completed. Received packets = %d, errors = %d\r\n", good_count, err_count);
ESP_LOGI(TAG, "Test completed. Received packets = %d, errors = %d", good_count, err_count);
// Wait for packet to be sent
uart_wait_tx_done(UART_NUM1, PACKET_READ_TICS);
free(slave_data);
uart_driver_delete(UART_NUM1);
TEST_ASSERT(err_count < 2);
TEST_CHECK_PROC_FAIL(err_count, TEST_ALLOW_PROC_FAIL);
}
// Master test of multi device test case.
@ -242,7 +244,7 @@ static void rs485_master(void)
// The master test case should be synchronized with slave
unity_wait_for_signal("Slave_ready");
unity_send_signal("Master_started");
printf("Start recieve loop.\r\n");
ESP_LOGI(TAG, "Start recieve loop.");
for(int i = 0; i < PACKETS_NUMBER; i++) {
// Form random buffer with CRC16
buffer_fill_random(master_buffer, BUF_SIZE);
@ -250,8 +252,9 @@ static void rs485_master(void)
esp_err_t status = print_packet_data("Send ", master_buffer, BUF_SIZE);
TEST_ASSERT(status == ESP_OK);
uart_write_bytes(UART_NUM1, (char*)master_buffer, BUF_SIZE);
uart_wait_tx_idle_polling(UART_NUM1);
// Read translated packet from slave
int len = uart_read_bytes(UART_NUM1, slave_buffer, BUF_SIZE, (PACKET_READ_TICS * 2));
int len = uart_read_bytes(UART_NUM1, slave_buffer, BUF_SIZE, PACKET_READ_TICS);
// Check if the received packet is too short
if (len > 2) {
// Print received packet and check checksum
@ -269,11 +272,13 @@ static void rs485_master(void)
err_count++;
}
}
uart_wait_tx_done(UART_NUM1, PACKET_READ_TICS);
// Free the buffer and delete driver at the end
free(master_buffer);
free(slave_buffer);
uart_driver_delete(UART_NUM1);
TEST_ASSERT(err_count <= 1);
printf("Test completed. Received packets = %d, errors = %d\r\n", (uint16_t)good_count, (uint16_t)err_count);
ESP_LOGI(TAG, "Test completed. Received packets = %d, errors = %d", good_count, err_count);
TEST_CHECK_PROC_FAIL(err_count, TEST_ALLOW_PROC_FAIL);
}
/*