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uart: uart_set_pin function will now use IOMUX whenever possible

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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
This commit is contained in:
Omar Chebib
2021-07-09 14:20:33 +08:00
parent 03fb3973a2
commit 779e7400b0
24 changed files with 697 additions and 103 deletions
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4
components/bootloader_support/src/bootloader_console.c
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@@ -71,8 +71,8 @@ void bootloader_console_init(void)
gpio_hal_iomux_func_sel(PERIPHS_IO_MUX_U0RXD_U, PIN_FUNC_GPIO);
gpio_hal_iomux_func_sel(PERIPHS_IO_MUX_U0TXD_U, PIN_FUNC_GPIO);
// Route GPIO signals to/from pins
const uint32_t tx_idx = uart_periph_signal[uart_num].tx_sig;
const uint32_t rx_idx = uart_periph_signal[uart_num].rx_sig;
const uint32_t tx_idx = UART_PERIPH_SIGNAL(uart_num, SOC_UART_TX_PIN_IDX);
const uint32_t rx_idx = UART_PERIPH_SIGNAL(uart_num, SOC_UART_RX_PIN_IDX);
PIN_INPUT_ENABLE(GPIO_PIN_MUX_REG[uart_rx_gpio]);
esp_rom_gpio_pad_pullup_only(uart_rx_gpio);
esp_rom_gpio_connect_out_signal(uart_tx_gpio, tx_idx, 0, 0);