mirror of
https://github.com/espressif/esp-idf.git
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48 lines
2.0 KiB
C
48 lines
2.0 KiB
C
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#include <string.h>
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#include "unity.h"
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#include "driver/uart.h"
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#include "esp_log.h"
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#define UART_TAG "Uart"
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#define UART_NUM1 (UART_NUM_1)
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#define BUF_SIZE (100)
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#define UART1_RX_PIN (22)
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#define UART1_TX_PIN (23)
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#define UART_BAUD_11520 (11520)
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#define UART_BAUD_115200 (115200)
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#define TOLERANCE (0.02) //baud rate error tolerance 2%.
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#define UART_TOLERANCE_CHECK(val, uper_limit, lower_limit) ( (val) <= (uper_limit) && (val) >= (lower_limit) )
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static void uart_config(uint32_t baud_rate, bool use_ref_tick)
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{
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uart_config_t uart_config = {
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.baud_rate = baud_rate,
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.data_bits = UART_DATA_8_BITS,
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.parity = UART_PARITY_DISABLE,
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.stop_bits = UART_STOP_BITS_1,
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.flow_ctrl = UART_HW_FLOWCTRL_DISABLE,
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.use_ref_tick = use_ref_tick,
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};
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uart_param_config(UART_NUM1, &uart_config);
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uart_set_pin(UART_NUM1, UART1_TX_PIN, UART1_RX_PIN, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE);
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uart_driver_install(UART_NUM1, BUF_SIZE * 2, BUF_SIZE * 2, 20, NULL, 0);
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}
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TEST_CASE("test uart get baud-rate","[uart]")
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{
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uint32_t baud_rate1 = 0;
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uint32_t baud_rate2 = 0;
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printf("init uart%d, use reftick, baud rate : %d\n", (int)UART_NUM1, (int)UART_BAUD_11520);
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uart_config(UART_BAUD_11520, true);
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uart_get_baudrate(UART_NUM1, &baud_rate1);
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printf("init uart%d, unuse reftick, baud rate : %d\n", (int)UART_NUM1, (int)UART_BAUD_115200);
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uart_config(UART_BAUD_115200, false);
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uart_get_baudrate(UART_NUM1, &baud_rate2);
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printf("get baud rate when use reftick: %d\n", (int)baud_rate1);
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printf("get baud rate when don't use reftick: %d\n", (int)baud_rate2);
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uart_driver_delete(UART_NUM1);
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TEST_ASSERT(UART_TOLERANCE_CHECK(baud_rate1, (1.0 + TOLERANCE)*UART_BAUD_11520, (1.0 - TOLERANCE)*UART_BAUD_11520))
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TEST_ASSERT(UART_TOLERANCE_CHECK(baud_rate2, (1.0 + TOLERANCE)*UART_BAUD_115200, (1.0 - TOLERANCE)*UART_BAUD_115200))
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ESP_LOGI(UART_TAG, "get baud-rate test passed ....\n");
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}
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