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Merge branch 'fix/lp_uart_flush_wait_for_idle_v5.4' into 'release/v5.4'

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fix(lp_uart): Update the `lp_core_uart_tx_flush()` API to wait for UART Tx idle state (v5.4)

See merge request espressif/esp-idf!37473
This commit is contained in:
Marius Vikhammer
2025-04-01 14:55:18 +08:00
parent 592c6312b6 528b1b3c37
commit 4354c3080a
1 changed files with 2 additions and 2 deletions
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4
components/ulp/lp_core/lp_core/lp_core_uart.c
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@@ -68,9 +68,9 @@ void lp_core_uart_tx_flush(uart_port_t lp_uart_num)
(void)lp_uart_num;
int loop_cnt = 0;
if (uart_ll_is_enabled(LP_UART_NUM_0) && !uart_hal_is_tx_idle(&hal)) {
if (uart_ll_is_enabled(LP_UART_NUM_0)) {
/* Wait for the Tx FIFO to be empty */
while (!(uart_hal_get_intraw_mask(&hal) & (LP_UART_TX_INT_FLAG | LP_UART_ERR_INT_FLAG))) {
while (!(uart_hal_get_intraw_mask(&hal) & (LP_UART_TX_INT_FLAG | LP_UART_ERR_INT_FLAG) && uart_hal_is_tx_idle(&hal))) {
loop_cnt++;
if (loop_cnt > 10000) {
/* Bail out */