fix(uart): type missmatch may cause error, test for -1

SuGlider · web-flow · commit 5ed541d4ddbd · 2025-04-02T16:48:22.000-03:00
diff --git a/cores/esp32/esp32-hal-uart.c b/cores/esp32/esp32-hal-uart.c
@@ -1045,7 +1045,7 @@ bool uartSetBaudRate(uart_t *uart, uint32_t baud_rate) {
   }
   UART_MUTEX_LOCK();
   // if necessary, set the correct UART Clock Source before changing the baudrate
-  if (previousClkSrc != newClkSrc) {
+  if (previousClkSrc < 0 || previousClkSrc != newClkSrc) {
     HP_UART_SRC_CLK_ATOMIC() {
       uart_ll_set_sclk(UART_LL_GET_HW(uart->num), newClkSrc);
     }

Original file line number	Diff line number	Diff line change
`@@ -1045,7 +1045,7 @@ bool uartSetBaudRate(uart_t *uart, uint32_t baud_rate) {`
`1045`	`1045`	`}`
`1046`	`1046`	`UART_MUTEX_LOCK();`
`1047`	`1047`	`// if necessary, set the correct UART Clock Source before changing the baudrate`
`1048`		`- if (previousClkSrc != newClkSrc) {`
	`1048`	`+ if (previousClkSrc < 0 \|\| previousClkSrc != newClkSrc) {`
`1049`	`1049`	`HP_UART_SRC_CLK_ATOMIC() {`
`1050`	`1050`	`uart_ll_set_sclk(UART_LL_GET_HW(uart->num), newClkSrc);`
`1051`	`1051`	`}`