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Fix(UART): ESP32 | ESP32-S2 UART Clock Source #10172

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merged 1 commit into from
Aug 16, 2024
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Fix(UART): ESP32 | ESP32-S2 UART Clock Source #10172

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4 changes: 2 additions & 2 deletions cores/esp32/esp32-hal-uart.c
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Original file line number Diff line number Diff line change
Expand Up @@ -508,8 +508,8 @@ uart_t *uartBegin(
#if SOC_UART_SUPPORT_XTAL_CLK
uart_config.source_clk = UART_SCLK_XTAL; // valid for C2, S3, C3, C6, H2 and P4
#elif SOC_UART_SUPPORT_REF_TICK
if (baudrate <= 1000000) {
uart_config.source_clk = UART_SCLK_REF_TICK; // valid for ESP32, S2 - MAX supported baud rate is 1MHz
if (baudrate <= 250000) {
uart_config.source_clk = UART_SCLK_REF_TICK; // valid for ESP32, S2 - MAX supported baud rate is 250 Kbps
} else {
uart_config.source_clk = UART_SCLK_APB; // baudrate may change with the APB Frequency!
}
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