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Merge branch 'bugfix/ticks_to_wait_for_uart_and_i2c_v3.2' into 'release/v3.2'

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driver: Fix ticks_to_wait for uart and i2c (v3.2)

See merge request espressif/esp-idf!5248
This commit is contained in:
Angus Gratton 2019-10-22 13:18:00 +08:00
commit 696a9fa0ba
2 changed files with 70 additions and 5 deletions
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25
components/driver/i2c.c
View file

@ -1380,13 +1380,18 @@ int i2c_slave_write_buffer(i2c_port_t i2c_num, uint8_t* data, int size, TickType
portBASE_TYPE res;
int cnt = 0;
portTickType ticks_end = xTaskGetTickCount() + ticks_to_wait;
portTickType ticks_start = xTaskGetTickCount();
res = xSemaphoreTake(p_i2c->slv_tx_mux, ticks_to_wait);
if (res == pdFALSE) {
return 0;
}
ticks_to_wait = ticks_end - xTaskGetTickCount();
TickType_t ticks_end = xTaskGetTickCount();
if (ticks_end - ticks_start > ticks_to_wait) {
ticks_to_wait = 0;
} else {
ticks_to_wait = ticks_to_wait - (ticks_end - ticks_start);
}
res = xRingbufferSend(p_i2c->tx_ring_buf, data, size, ticks_to_wait);
if (res == pdFALSE) {
cnt = 0;
@ -1421,18 +1426,28 @@ int i2c_slave_read_buffer(i2c_port_t i2c_num, uint8_t* data, size_t max_size, Ti
i2c_obj_t* p_i2c = p_i2c_obj[i2c_num];
portBASE_TYPE res;
portTickType ticks_end = xTaskGetTickCount() + ticks_to_wait;
portTickType ticks_start = xTaskGetTickCount();
res = xSemaphoreTake(p_i2c->slv_rx_mux, ticks_to_wait);
if (res == pdFALSE) {
return 0;
}
ticks_to_wait = ticks_end - xTaskGetTickCount();
TickType_t ticks_end = xTaskGetTickCount();
if (ticks_end - ticks_start > ticks_to_wait) {
ticks_to_wait = 0;
} else {
ticks_to_wait = ticks_to_wait - (ticks_end - ticks_start);
}
int cnt = i2c_slave_read(i2c_num, data, max_size, ticks_to_wait);
if (cnt > 0) {
I2C_ENTER_CRITICAL(&i2c_spinlock[i2c_num]);
I2C[i2c_num]->int_ena.rx_fifo_full = 1;
I2C_EXIT_CRITICAL(&i2c_spinlock[i2c_num]);
ticks_to_wait = ticks_end - xTaskGetTickCount();
ticks_end = xTaskGetTickCount();
if (ticks_end - ticks_start > ticks_to_wait) {
ticks_to_wait = 0;
} else {
ticks_to_wait = ticks_to_wait - (ticks_end - ticks_start);
}
if (cnt < max_size && ticks_to_wait > 0) {
cnt += i2c_slave_read(i2c_num, data + cnt, max_size - cnt, ticks_to_wait);
}

50
components/driver/test/test_uart.c
View file

@ -118,6 +118,56 @@ static void uart_config(uint32_t baud_rate, bool use_ref_tick)
uart_driver_install(UART_NUM1, BUF_SIZE * 2, BUF_SIZE * 2, 20, NULL, 0);
}
static volatile bool exit_flag;
static void test_task(void *pvParameters)
{
xSemaphoreHandle *sema = (xSemaphoreHandle *) pvParameters;
char* data = (char *) malloc(256);
while (exit_flag == false) {
uart_tx_chars(UART_NUM1, data, 256);
// The uart_wait_tx_done() function does not block anything if ticks_to_wait = 0.
uart_wait_tx_done(UART_NUM1, 0);
}
free(data);
xSemaphoreGive(*sema);
vTaskDelete(NULL);
}
static void test_task2(void *pvParameters)
{
while (exit_flag == false) {
// This task obstruct a setting tx_done_sem semaphore in the UART interrupt.
// It leads to waiting the ticks_to_wait time in uart_wait_tx_done() function.
uart_disable_intr_mask(UART_NUM1, UART_TX_DONE_INT_ENA_M);
}
vTaskDelete(NULL);
}
TEST_CASE("test uart_wait_tx_done is not blocked when ticks_to_wait=0", "[uart]")
{
uart_config(UART_BAUD_11520, false);
xSemaphoreHandle exit_sema = xSemaphoreCreateBinary();
exit_flag = false;
xTaskCreate(test_task, "tsk1", 2048, &exit_sema, 5, NULL);
xTaskCreate(test_task2, "tsk2", 2048, NULL, 5, NULL);
printf("Waiting for 5 sec\n");
vTaskDelay(5000 / portTICK_PERIOD_MS);
exit_flag = true;
if (xSemaphoreTake(exit_sema, 1000 / portTICK_PERIOD_MS) == pdTRUE) {
vSemaphoreDelete(exit_sema);
} else {
TEST_FAIL_MESSAGE("uart_wait_tx_done is blocked");
}
TEST_ESP_OK(uart_driver_delete(UART_NUM1));
}
TEST_CASE("test uart get baud-rate","[uart]")
{
uint32_t baud_rate1 = 0;