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42 lines
877 B
C
42 lines
877 B
C
/*
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* SPDX-FileCopyrightText: 2025 Gunar Schorcht
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* SPDX-License-Identifier: LGPL-2.1-only
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*/
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/**
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* @ingroup cpu_esp32
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* @ingroup drivers_periph_uart
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* @{
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*
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* @file
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* @brief Low-level UART functions required by ESP32x
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*
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* @author Gunar Schorcht <gunar@schorcht.net>
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*
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* @}
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*/
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#include "periph/uart.h"
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#include "esp_err.h"
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#include "esp_private/uart_share_hw_ctrl.h"
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#include "hal/uart_ll.h"
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void uart_set_wakeup_threshold(uart_t uart, uint32_t threshold)
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{
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assert(uart < SOC_UART_NUM);
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HP_UART_PAD_CLK_ATOMIC() {
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uart_ll_set_wakeup_thrd(UART_LL_GET_HW(uart), threshold);
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uart_ll_enable_pad_sleep_clock(UART_LL_GET_HW(uart), true);
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}
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}
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esp_err_t uart_wait_tx_idle_polling(uart_t uart)
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{
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if (uart_ll_is_enabled(uart)) {
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while (!uart_ll_is_tx_idle(UART_LL_GET_HW(uart))) { }
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}
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return ESP_OK;
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}
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