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779e7400b0
By using IOMUX instead of GPIO Matrix for UART, it is now possible on ESP32 boards to use the UART as a wake up source even if it is not used as a console. For other boards where this issue was not present, using IOMUX has the advantage to be faster than using GPIO matrix, so a highest baudrate can be used
56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
// Copyright 2015-2021 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#pragma once
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#include "soc/io_mux_reg.h"
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/* Specify the number of pins for UART */
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#define SOC_UART_PINS_COUNT (4)
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/* Specify the GPIO pin number for each UART signal in the IOMUX */
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#define U0RXD_GPIO_NUM 44
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#define U0TXD_GPIO_NUM 43
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#define U0CTS_GPIO_NUM 16
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#define U0RTS_GPIO_NUM 15
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#define U1RXD_GPIO_NUM 18
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#define U1TXD_GPIO_NUM 17
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#define U1CTS_GPIO_NUM 20
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#define U1RTS_GPIO_NUM 19
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#define U2RXD_GPIO_NUM (-1)
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#define U2TXD_GPIO_NUM (-1)
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#define U2CTS_GPIO_NUM (-1)
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#define U2RTS_GPIO_NUM (-1)
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/* The following defines are necessary for reconfiguring the UART
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* to use IOMUX, at runtime. */
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#define U0TXD_MUX_FUNC (FUNC_U0TXD_U0TXD)
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#define U0RXD_MUX_FUNC (FUNC_U0RXD_U0RXD)
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#define U0RTS_MUX_FUNC (FUNC_XTAL_32K_P_U0RTS)
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#define U0CTS_MUX_FUNC (FUNC_XTAL_32K_N_U0CTS)
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#define U1TXD_MUX_FUNC (FUNC_DAC_1_U1TXD)
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#define U1RXD_MUX_FUNC (FUNC_DAC_2_U1RXD)
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#define U1RTS_MUX_FUNC (FUNC_GPIO19_U1RTS)
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#define U1CTS_MUX_FUNC (FUNC_GPIO20_U1CTS)
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/* UART2 cannot be used directly through the IOMUX, these value
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* shall not be used. */
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#define U2TXD_MUX_FUNC (-1)
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#define U2RXD_MUX_FUNC (-1)
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#define U2RTS_MUX_FUNC (-1)
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#define U2CTS_MUX_FUNC (-1)
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