From fdb390aeacf1ce2a019d5478702a36d90da18a16 Mon Sep 17 00:00:00 2001 From: Jeroen Domburg Date: Fri, 25 Aug 2017 17:46:28 +0800 Subject: [PATCH] Place uart_tx_wait_idle in IRAM --- components/esp32/include/rom/uart.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/components/esp32/include/rom/uart.h b/components/esp32/include/rom/uart.h index 81fa26c23..8f075392c 100644 --- a/components/esp32/include/rom/uart.h +++ b/components/esp32/include/rom/uart.h @@ -267,7 +267,7 @@ void uart_tx_flush(uint8_t uart_no); * The function defined in ROM code has a bug, so we define the correct version * here for compatibility. */ -static inline void uart_tx_wait_idle(uint8_t uart_no) { +static inline void IRAM_ATTR uart_tx_wait_idle(uint8_t uart_no) { while(REG_GET_FIELD(UART_STATUS_REG(uart_no), UART_ST_UTX_OUT)) { ; }