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fix(uart): Permit UART speeds over 460800 on ESP32 Arduino 3.0 #11025

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fix(uart): Permit UART speeds over 460800 on ESP32 Arduino 3.0 #11025

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fix(uart): Permit UART speeds over 460800 on ESP32 Arduino 3.0 and la…
ewpa Mar 1, 2025
03e3bed
Merge branch 'release/v3.0.x' into allow-higher-console-baud-rates
ewpa Mar 1, 2025
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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 @@ -508,11 +508,11 @@ uart_t *uartBegin(
// therefore, uart clock source will set to XTAL for all SoC that support it. This fix solves the C6|H2 issue.
#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
#elif defined(CONFIG_PM_ENABLE) && SOC_UART_SUPPORT_REF_TICK
if (baudrate <= REF_TICK_BAUDRATE_LIMIT) {
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!
uart_config.source_clk = UART_SCLK_APB; // if power management is enabled baudrate may change with the APB Frequency!
}
#else
// Default CLK Source: CLK_APB for ESP32|S2|S3|C3 -- CLK_PLL_F40M for C2 -- CLK_PLL_F48M for H2 -- CLK_PLL_F80M for C6
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