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UART: UART_SELECT_WRITE_NOTIF event added in UART driver

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Closes https://github.com/espressif/esp-idf/issues/10986
This commit is contained in:
Sonika Rathi 2023-05-22 13:59:37 +05:30 committed by sonika.rathi
parent 8c70e6a5fb
commit 571831b2ee
2 changed files with 82 additions and 15 deletions
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33
components/driver/uart/uart.c
View File

@ -1,5 +1,5 @@
/* /*
* SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD * SPDX-FileCopyrightText: 2015-2023 Espressif Systems (Shanghai) CO LTD
* *
* SPDX-License-Identifier: Apache-2.0 * SPDX-License-Identifier: Apache-2.0
*/ */
@ -839,7 +839,9 @@ static void UART_ISR_ATTR uart_rx_intr_handler_default(void *param)
uint32_t uart_intr_status = 0; uint32_t uart_intr_status = 0;
uart_event_t uart_event; uart_event_t uart_event;
portBASE_TYPE HPTaskAwoken = 0; portBASE_TYPE HPTaskAwoken = 0;
bool need_yield = false;
static uint8_t pat_flg = 0; static uint8_t pat_flg = 0;
BaseType_t sent = pdFALSE;
while (1) { while (1) {
// The `continue statement` may cause the interrupt to loop infinitely // The `continue statement` may cause the interrupt to loop infinitely
// we exit the interrupt here // we exit the interrupt here
@ -861,6 +863,7 @@ static void UART_ISR_ATTR uart_rx_intr_handler_default(void *param)
if (p_uart->tx_waiting_fifo == true && p_uart->tx_buf_size == 0) { if (p_uart->tx_waiting_fifo == true && p_uart->tx_buf_size == 0) {
p_uart->tx_waiting_fifo = false; p_uart->tx_waiting_fifo = false;
xSemaphoreGiveFromISR(p_uart->tx_fifo_sem, &HPTaskAwoken); xSemaphoreGiveFromISR(p_uart->tx_fifo_sem, &HPTaskAwoken);
need_yield |= (HPTaskAwoken == pdTRUE);
} else { } else {
//We don't use TX ring buffer, because the size is zero. //We don't use TX ring buffer, because the size is zero.
if (p_uart->tx_buf_size == 0) { if (p_uart->tx_buf_size == 0) {
@ -887,6 +890,7 @@ static void UART_ISR_ATTR uart_rx_intr_handler_default(void *param)
} }
//We have saved the data description from the 1st item, return buffer. //We have saved the data description from the 1st item, return buffer.
vRingbufferReturnItemFromISR(p_uart->tx_ring_buf, p_uart->tx_head, &HPTaskAwoken); vRingbufferReturnItemFromISR(p_uart->tx_ring_buf, p_uart->tx_head, &HPTaskAwoken);
need_yield |= (HPTaskAwoken == pdTRUE);
} else if (p_uart->tx_ptr == NULL) { } else if (p_uart->tx_ptr == NULL) {
//Update the TX item pointer, we will need this to return item to buffer. //Update the TX item pointer, we will need this to return item to buffer.
p_uart->tx_ptr = (uint8_t *)p_uart->tx_head; p_uart->tx_ptr = (uint8_t *)p_uart->tx_head;
@ -909,6 +913,7 @@ static void UART_ISR_ATTR uart_rx_intr_handler_default(void *param)
if (p_uart->tx_len_cur == 0) { if (p_uart->tx_len_cur == 0) {
//Return item to ring buffer. //Return item to ring buffer.
vRingbufferReturnItemFromISR(p_uart->tx_ring_buf, p_uart->tx_head, &HPTaskAwoken); vRingbufferReturnItemFromISR(p_uart->tx_ring_buf, p_uart->tx_head, &HPTaskAwoken);
need_yield |= (HPTaskAwoken == pdTRUE);
p_uart->tx_head = NULL; p_uart->tx_head = NULL;
p_uart->tx_ptr = NULL; p_uart->tx_ptr = NULL;
//Sending item done, now we need to send break if there is a record. //Sending item done, now we need to send break if there is a record.
@ -926,6 +931,12 @@ static void UART_ISR_ATTR uart_rx_intr_handler_default(void *param)
//enable TX empty interrupt //enable TX empty interrupt
en_tx_flg = true; en_tx_flg = true;
} }
UART_ENTER_CRITICAL_ISR(&uart_selectlock);
if (p_uart->uart_select_notif_callback) {
p_uart->uart_select_notif_callback(uart_num, UART_SELECT_WRITE_NOTIF, &HPTaskAwoken);
need_yield |= (HPTaskAwoken == pdTRUE);
}
UART_EXIT_CRITICAL_ISR(&uart_selectlock);
} else { } else {
//enable TX empty interrupt //enable TX empty interrupt
en_tx_flg = true; en_tx_flg = true;
@ -973,13 +984,16 @@ static void UART_ISR_ATTR uart_rx_intr_handler_default(void *param)
UART_ENTER_CRITICAL_ISR(&uart_selectlock); UART_ENTER_CRITICAL_ISR(&uart_selectlock);
if (p_uart->uart_select_notif_callback) { if (p_uart->uart_select_notif_callback) {
p_uart->uart_select_notif_callback(uart_num, UART_SELECT_READ_NOTIF, &HPTaskAwoken); p_uart->uart_select_notif_callback(uart_num, UART_SELECT_READ_NOTIF, &HPTaskAwoken);
need_yield |= (HPTaskAwoken == pdTRUE);
} }
UART_EXIT_CRITICAL_ISR(&uart_selectlock); UART_EXIT_CRITICAL_ISR(&uart_selectlock);
} }
p_uart->rx_stash_len = rx_fifo_len; p_uart->rx_stash_len = rx_fifo_len;
//If we fail to push data to ring buffer, we will have to stash the data, and send next time. //If we fail to push data to ring buffer, we will have to stash the data, and send next time.
//Mainly for applications that uses flow control or small ring buffer. //Mainly for applications that uses flow control or small ring buffer.
if (pdFALSE == xRingbufferSendFromISR(p_uart->rx_ring_buf, p_uart->rx_data_buf, p_uart->rx_stash_len, &HPTaskAwoken)) { sent = xRingbufferSendFromISR(p_uart->rx_ring_buf, p_uart->rx_data_buf, p_uart->rx_stash_len, &HPTaskAwoken);
need_yield |= (HPTaskAwoken == pdTRUE);
if (sent == pdFALSE) {
p_uart->rx_buffer_full_flg = true; p_uart->rx_buffer_full_flg = true;
UART_ENTER_CRITICAL_ISR(&(uart_context[uart_num].spinlock)); UART_ENTER_CRITICAL_ISR(&(uart_context[uart_num].spinlock));
uart_hal_disable_intr_mask(&(uart_context[uart_num].hal), UART_INTR_RXFIFO_TOUT | UART_INTR_RXFIFO_FULL); uart_hal_disable_intr_mask(&(uart_context[uart_num].hal), UART_INTR_RXFIFO_TOUT | UART_INTR_RXFIFO_FULL);
@ -998,7 +1012,9 @@ static void UART_ISR_ATTR uart_rx_intr_handler_default(void *param)
p_uart->rx_buffered_len + pat_idx); p_uart->rx_buffered_len + pat_idx);
} }
UART_EXIT_CRITICAL_ISR(&(uart_context[uart_num].spinlock)); UART_EXIT_CRITICAL_ISR(&(uart_context[uart_num].spinlock));
if ((p_uart->event_queue != NULL) && (pdFALSE == xQueueSendFromISR(p_uart->event_queue, (void * )&uart_event, &HPTaskAwoken))) { sent = xQueueSendFromISR(p_uart->event_queue, (void * )&uart_event, &HPTaskAwoken);
need_yield |= (HPTaskAwoken == pdTRUE);
if ((p_uart->event_queue != NULL) && (sent == pdFALSE)) {
#ifndef CONFIG_UART_ISR_IN_IRAM //Only log if ISR is not in IRAM #ifndef CONFIG_UART_ISR_IN_IRAM //Only log if ISR is not in IRAM
ESP_EARLY_LOGV(UART_TAG, "UART event queue full"); ESP_EARLY_LOGV(UART_TAG, "UART event queue full");
#endif #endif
@ -1039,6 +1055,7 @@ static void UART_ISR_ATTR uart_rx_intr_handler_default(void *param)
UART_ENTER_CRITICAL_ISR(&uart_selectlock); UART_ENTER_CRITICAL_ISR(&uart_selectlock);
if (p_uart->uart_select_notif_callback) { if (p_uart->uart_select_notif_callback) {
p_uart->uart_select_notif_callback(uart_num, UART_SELECT_ERROR_NOTIF, &HPTaskAwoken); p_uart->uart_select_notif_callback(uart_num, UART_SELECT_ERROR_NOTIF, &HPTaskAwoken);
need_yield |= (HPTaskAwoken == pdTRUE);
} }
UART_EXIT_CRITICAL_ISR(&uart_selectlock); UART_EXIT_CRITICAL_ISR(&uart_selectlock);
uart_hal_clr_intsts_mask(&(uart_context[uart_num].hal), UART_INTR_RXFIFO_OVF); uart_hal_clr_intsts_mask(&(uart_context[uart_num].hal), UART_INTR_RXFIFO_OVF);
@ -1050,6 +1067,7 @@ static void UART_ISR_ATTR uart_rx_intr_handler_default(void *param)
UART_ENTER_CRITICAL_ISR(&uart_selectlock); UART_ENTER_CRITICAL_ISR(&uart_selectlock);
if (p_uart->uart_select_notif_callback) { if (p_uart->uart_select_notif_callback) {
p_uart->uart_select_notif_callback(uart_num, UART_SELECT_ERROR_NOTIF, &HPTaskAwoken); p_uart->uart_select_notif_callback(uart_num, UART_SELECT_ERROR_NOTIF, &HPTaskAwoken);
need_yield |= (HPTaskAwoken == pdTRUE);
} }
UART_EXIT_CRITICAL_ISR(&uart_selectlock); UART_EXIT_CRITICAL_ISR(&uart_selectlock);
uart_hal_clr_intsts_mask(&(uart_context[uart_num].hal), UART_INTR_FRAM_ERR); uart_hal_clr_intsts_mask(&(uart_context[uart_num].hal), UART_INTR_FRAM_ERR);
@ -1058,6 +1076,7 @@ static void UART_ISR_ATTR uart_rx_intr_handler_default(void *param)
UART_ENTER_CRITICAL_ISR(&uart_selectlock); UART_ENTER_CRITICAL_ISR(&uart_selectlock);
if (p_uart->uart_select_notif_callback) { if (p_uart->uart_select_notif_callback) {
p_uart->uart_select_notif_callback(uart_num, UART_SELECT_ERROR_NOTIF, &HPTaskAwoken); p_uart->uart_select_notif_callback(uart_num, UART_SELECT_ERROR_NOTIF, &HPTaskAwoken);
need_yield |= (HPTaskAwoken == pdTRUE);
} }
UART_EXIT_CRITICAL_ISR(&uart_selectlock); UART_EXIT_CRITICAL_ISR(&uart_selectlock);
uart_hal_clr_intsts_mask(&(uart_context[uart_num].hal), UART_INTR_PARITY_ERR); uart_hal_clr_intsts_mask(&(uart_context[uart_num].hal), UART_INTR_PARITY_ERR);
@ -1076,6 +1095,7 @@ static void UART_ISR_ATTR uart_rx_intr_handler_default(void *param)
p_uart->tx_waiting_brk = 0; p_uart->tx_waiting_brk = 0;
} else { } else {
xSemaphoreGiveFromISR(p_uart->tx_brk_sem, &HPTaskAwoken); xSemaphoreGiveFromISR(p_uart->tx_brk_sem, &HPTaskAwoken);
need_yield |= (HPTaskAwoken == pdTRUE);
} }
} else if (uart_intr_status & UART_INTR_TX_BRK_IDLE) { } else if (uart_intr_status & UART_INTR_TX_BRK_IDLE) {
UART_ENTER_CRITICAL_ISR(&(uart_context[uart_num].spinlock)); UART_ENTER_CRITICAL_ISR(&(uart_context[uart_num].spinlock));
@ -1114,6 +1134,7 @@ static void UART_ISR_ATTR uart_rx_intr_handler_default(void *param)
} }
UART_EXIT_CRITICAL_ISR(&(uart_context[uart_num].spinlock)); UART_EXIT_CRITICAL_ISR(&(uart_context[uart_num].spinlock));
xSemaphoreGiveFromISR(p_uart_obj[uart_num]->tx_done_sem, &HPTaskAwoken); xSemaphoreGiveFromISR(p_uart_obj[uart_num]->tx_done_sem, &HPTaskAwoken);
need_yield |= (HPTaskAwoken == pdTRUE);
} }
} }
#if SOC_UART_SUPPORT_WAKEUP_INT #if SOC_UART_SUPPORT_WAKEUP_INT
@ -1128,14 +1149,16 @@ static void UART_ISR_ATTR uart_rx_intr_handler_default(void *param)
} }
if (uart_event.type != UART_EVENT_MAX && p_uart->event_queue) { if (uart_event.type != UART_EVENT_MAX && p_uart->event_queue) {
if (pdFALSE == xQueueSendFromISR(p_uart->event_queue, (void * )&uart_event, &HPTaskAwoken)) { sent = xQueueSendFromISR(p_uart->event_queue, (void * )&uart_event, &HPTaskAwoken);
need_yield |= (HPTaskAwoken == pdTRUE);
if (sent == pdFALSE) {
#ifndef CONFIG_UART_ISR_IN_IRAM //Only log if ISR is not in IRAM #ifndef CONFIG_UART_ISR_IN_IRAM //Only log if ISR is not in IRAM
ESP_EARLY_LOGV(UART_TAG, "UART event queue full"); ESP_EARLY_LOGV(UART_TAG, "UART event queue full");
#endif #endif
} }
} }
} }
if (HPTaskAwoken == pdTRUE) { if (need_yield) {
portYIELD_FROM_ISR(); portYIELD_FROM_ISR();
} }
} }

64
components/vfs/test_apps/main/test_vfs_select.c
View File

@ -199,7 +199,7 @@ TEST_CASE("UART can do select()", "[vfs]")
deinit(uart_fd, socket_fd); deinit(uart_fd, socket_fd);
} }
TEST_CASE("UART can do poll()", "[vfs]") TEST_CASE("UART can do poll() with POLLIN event", "[vfs]")
{ {
int uart_fd; int uart_fd;
int socket_fd; int socket_fd;
@ -259,6 +259,50 @@ TEST_CASE("UART can do poll()", "[vfs]")
deinit(uart_fd, socket_fd); deinit(uart_fd, socket_fd);
} }
TEST_CASE("UART can do poll() with POLLOUT event", "[vfs]")
{
int uart_fd;
int socket_fd;
char recv_message[sizeof(message)];
init(&uart_fd, &socket_fd);
struct pollfd poll_fds[] = {
{
.fd = uart_fd,
.events = POLLOUT,
},
{
.fd = -1, // should be ignored according to the documentation of poll()
},
};
const test_task_param_t test_task_param = {
.fd = uart_fd,
.delay_ms = 50,
.sem = xSemaphoreCreateBinary(),
};
TEST_ASSERT_NOT_NULL(test_task_param.sem);
start_task(&test_task_param);
poll(poll_fds, sizeof(poll_fds)/sizeof(poll_fds[0]), 100);
TEST_ASSERT_EQUAL(uart_fd, poll_fds[0].fd);
TEST_ASSERT_EQUAL(POLLOUT, poll_fds[0].revents);
TEST_ASSERT_EQUAL(-1, poll_fds[1].fd);
TEST_ASSERT_EQUAL(0, poll_fds[1].revents);
int read_bytes = read(uart_fd, recv_message, sizeof(message));
TEST_ASSERT_EQUAL(read_bytes, sizeof(message));
TEST_ASSERT_EQUAL_MEMORY(message, recv_message, sizeof(message));
TEST_ASSERT_EQUAL(xSemaphoreTake(test_task_param.sem, 1000 / portTICK_PERIOD_MS), pdTRUE);
vSemaphoreDelete(test_task_param.sem);
deinit(uart_fd, socket_fd);
}
#endif #endif
TEST_CASE("socket can do select()", "[vfs]") TEST_CASE("socket can do select()", "[vfs]")
@ -509,19 +553,11 @@ TEST_CASE("concurrent selects work", "[vfs]")
.errfds = NULL, .errfds = NULL,
.maxfds = uart_fd + 1, .maxfds = uart_fd + 1,
.tv = &tv, .tv = &tv,
.select_ret = 0, // expected timeout .select_ret = 1,
.sem = xSemaphoreCreateBinary(), .sem = xSemaphoreCreateBinary(),
}; };
TEST_ASSERT_NOT_NULL(param.sem); TEST_ASSERT_NOT_NULL(param.sem);
start_select_task(&param);
fd_set rdfds2;
FD_ZERO(&rdfds2);
FD_SET(uart_fd, &rdfds2);
FD_SET(socket_fd, &rdfds2);
FD_SET(dummy_socket_fd, &rdfds2);
const test_task_param_t send_param = { const test_task_param_t send_param = {
.fd = uart_fd, .fd = uart_fd,
.delay_ms = 50, .delay_ms = 50,
@ -529,6 +565,14 @@ TEST_CASE("concurrent selects work", "[vfs]")
}; };
TEST_ASSERT_NOT_NULL(send_param.sem); TEST_ASSERT_NOT_NULL(send_param.sem);
start_task(&send_param); // This task will write to UART which will be detected by select() start_task(&send_param); // This task will write to UART which will be detected by select()
start_select_task(&param);
vTaskDelay(100 / portTICK_PERIOD_MS); //make sure the task has started and waits in select()
fd_set rdfds2;
FD_ZERO(&rdfds2);
FD_SET(uart_fd, &rdfds2);
FD_SET(socket_fd, &rdfds2);
FD_SET(dummy_socket_fd, &rdfds2);
int s = select(MAX(MAX(uart_fd, dummy_socket_fd), socket_fd) + 1, &rdfds2, NULL, NULL, &tv); int s = select(MAX(MAX(uart_fd, dummy_socket_fd), socket_fd) + 1, &rdfds2, NULL, NULL, &tv);
TEST_ASSERT_EQUAL(1, s); TEST_ASSERT_EQUAL(1, s);