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feat(uart): support HP/LP uart on ESP32S31

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This commit is contained in:
gaoxu
2026-04-15 10:57:26 +08:00
parent 668dfb7e33
commit 0068fb1507
24 changed files with 1374 additions and 125 deletions
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components/esp_hal_uart/esp32/include/hal/uart_ll.h
+46 -1
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@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2015-2025 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2015-2026 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@@ -62,6 +62,10 @@ typedef enum {
UART_INTR_CMD_CHAR_DET = (0x1 << 18),
} uart_intr_t;
typedef enum {
UART_LL_MEM_LP_MODE_SHUT_DOWN, /*!< mem_pd only; no mem_lp_mode stage field (cf. rmt_ll_mem_set_low_power_mode) */
} uart_ll_mem_lp_mode_t;
/**
* @brief Check if UART is enabled or disabled.
*
@@ -208,6 +212,47 @@ FORCE_INLINE_ATTR void uart_ll_get_sclk(uart_dev_t *hw, soc_module_clk_t *source
}
}
/**
* @brief UART FIFO/RAM memory power control (HP blocks).
*/
/**
* @brief Force UART FIFO memory powered on for this block (clear mem_pd).
*/
FORCE_INLINE_ATTR void uart_ll_mem_force_power_on(uart_port_t uart_num)
{
uart_dev_t *hw = UART_LL_GET_HW(uart_num);
hw->mem_conf.mem_pd = 0;
}
/**
* @brief Set UART memory low power mode in low power stage (ESP32 has no mem_lp_mode; no-op).
*/
FORCE_INLINE_ATTR void uart_ll_mem_set_low_power_mode(uart_port_t uart_num, uart_ll_mem_lp_mode_t mode)
{
HAL_ASSERT(mode == UART_LL_MEM_LP_MODE_SHUT_DOWN);
(void)uart_num;
}
/**
* @brief Let UART FIFO memory power follow PMU (clear software mem_pd), same idea as rmt_ll_mem_power_by_pmu.
*/
FORCE_INLINE_ATTR void uart_ll_mem_power_by_pmu(uart_port_t uart_num)
{
uart_dev_t *hw = UART_LL_GET_HW(uart_num);
hw->mem_conf.mem_pd = 0;
}
/**
* @brief Force UART FIFO memory to low power (set mem_pd), same idea as rmt_ll_mem_force_low_power.
*
* @note When all three UART instances have mem_pd set, shared memory enters low power (TRM).
*/
FORCE_INLINE_ATTR void uart_ll_mem_force_low_power(uart_port_t uart_num)
{
uart_dev_t *hw = UART_LL_GET_HW(uart_num);
hw->mem_conf.mem_pd = 1;
}
/**
* @brief Configure the baud-rate.
*