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[release/2.x] fix(uart): Set back Pin signal polarity #9952

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merged 3 commits into from
Jul 1, 2024
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[release/2.x] fix(uart): Set back Pin signal polarity #9952

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6c6b909
fix(uart): Set back Pin signal polarity
SuGlider Jun 28, 2024
05d9ab5
fix(uart): Remove commentary
SuGlider Jun 29, 2024
4f88db2
fix(uart): Update comment
me-no-dev Jul 1, 2024
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12 changes: 8 additions & 4 deletions cores/esp32/esp32-hal-uart.c
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Original file line number Diff line number Diff line change
Expand Up @@ -434,12 +434,16 @@ uart_t* uartBegin(uint8_t uart_nr, uint32_t baudrate, uint32_t config, int8_t rx

if (retCode) retCode &= ESP_OK == uart_param_config(uart_nr, &uart_config);

// Is it right or the idea is to swap rx and tx pins?
if (retCode && inverted) {
if (retCode) {
if (inverted) {
// invert signal for both Rx and Tx
retCode &= ESP_OK == uart_set_line_inverse(uart_nr, UART_SIGNAL_TXD_INV | UART_SIGNAL_RXD_INV);
} else {
// invert signal for both Rx and Tx
retCode &= ESP_OK == uart_set_line_inverse(uart_nr, UART_SIGNAL_TXD_INV | UART_SIGNAL_RXD_INV);
retCode &= ESP_OK == uart_set_line_inverse(uart_nr, UART_SIGNAL_INV_DISABLE);
}
}

// if all fine, set internal parameters
if (retCode) {
uart->_baudrate = baudrate;
uart->_config = config;
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