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uart: fix esp32c3 uart output garbage value after resetting

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Wangjialin
2021-03-16 00:50:31 +08:00
committed by Chen Yi Qun
parent cba6f1ae66
commit 427fe1bcde
5 changed files with 30 additions and 6 deletions
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15
components/driver/uart.c
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@@ -197,10 +197,19 @@ static void uart_module_enable(uart_port_t uart_num)
{
UART_ENTER_CRITICAL(&(uart_context[uart_num].spinlock));
if (uart_context[uart_num].hw_enabled != true) {
if (uart_num != CONFIG_ESP_CONSOLE_UART_NUM) {
periph_module_reset(uart_periph_signal[uart_num].module);
}
periph_module_enable(uart_periph_signal[uart_num].module);
if (uart_num != CONFIG_ESP_CONSOLE_UART_NUM) {
// Workaround for ESP32C3: enable core reset
// before enabling uart module clock
// to prevent uart output garbage value.
#if SOC_UART_REQUIRE_CORE_RESET
uart_hal_set_reset_core(&(uart_context[uart_num].hal), true);
periph_module_reset(uart_periph_signal[uart_num].module);
uart_hal_set_reset_core(&(uart_context[uart_num].hal), false);
#else
periph_module_reset(uart_periph_signal[uart_num].module);
#endif
}
uart_context[uart_num].hw_enabled = true;
}
UART_EXIT_CRITICAL(&(uart_context[uart_num].spinlock));