andry/EMS-ESP32
1
0
Fork 0
mirror of https://github.com/emsesp/EMS-ESP32.git synced 2025-12-06 07:49:52 +03:00
Code Issues Packages Projects Releases Wiki Activity

Add options to invert RX and TX and to enable pullup on RX

Browse Source 
These option can be individually enabled at compile time by the
following defines:

EMSUART_RX_INVERT
EMSUART_TX_INVERT
EMSUART_RX_PULLUP
This commit is contained in:
Pelle van der Heide
2023-11-10 13:39:22 +01:00
parent 8ba40003e4
commit dfd2a017c2
1 changed files with 17 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
src/uart/emsuart_esp32.cpp
View File

@@ -34,6 +34,7 @@ namespace emsesp {
static QueueHandle_t uart_queue;
uint8_t tx_mode_ = 0xFF;
uint32_t inverse_mask = 0;
/*
* receive task, wait for break and call incoming_telegram
@@ -82,8 +83,18 @@ void EMSuart::start(const uint8_t tx_mode, const uint8_t rx_gpio, const uint8_t
.flow_ctrl = UART_HW_FLOWCTRL_DISABLE,
.source_clk = UART_SCLK_APB,
};
#if defined(EMSUART_RX_INVERT)
inverse_mask |= UART_SIGNAL_RXD_INV;
#endif
#if defined(EMSUART_TX_INVERT)
inverse_mask |= UART_SIGNAL_TXD_INV;
#endif
uart_param_config(EMSUART_NUM, &uart_config);
uart_set_pin(EMSUART_NUM, tx_gpio, rx_gpio, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE);
uart_set_line_inverse(EMSUART_NUM, inverse_mask);
#if defined(EMSUART_RX_PULLUP)
gpio_set_pull_mode(gpio_num_t(rx_gpio), GPIO_PULLUP_ONLY);
#endif
uart_driver_install(EMSUART_NUM, 129, 0, (EMS_MAXBUFFERSIZE + 1) * 2, &uart_queue, 0); // buffer must be > fifo
uart_set_rx_full_threshold(EMSUART_NUM, 1);
uart_set_rx_timeout(EMSUART_NUM, 0); // disable
@@ -136,9 +147,9 @@ uint16_t EMSuart::transmit(const uint8_t * buf, const uint8_t len) {
uart_write_bytes(EMSUART_NUM, &buf[i], 1);
delayMicroseconds(EMSUART_TX_WAIT_PLUS);
}
uart_set_line_inverse(EMSUART_NUM, UART_SIGNAL_TXD_INV);
uart_set_line_inverse(EMSUART_NUM, UART_SIGNAL_TXD_INV ^ inverse_mask);
delayMicroseconds(EMSUART_TX_BRK_PLUS);
uart_set_line_inverse(EMSUART_NUM, 0);
uart_set_line_inverse(EMSUART_NUM, inverse_mask);
return EMS_TX_STATUS_OK;
}
@@ -147,9 +158,9 @@ uint16_t EMSuart::transmit(const uint8_t * buf, const uint8_t len) {
uart_write_bytes(EMSUART_NUM, &buf[i], 1);
delayMicroseconds(EMSUART_TX_WAIT_HT3);
}
uart_set_line_inverse(EMSUART_NUM, UART_SIGNAL_TXD_INV);
uart_set_line_inverse(EMSUART_NUM, UART_SIGNAL_TXD_INV ^ inverse_mask);
delayMicroseconds(EMSUART_TX_BRK_HT3);
uart_set_line_inverse(EMSUART_NUM, 0);
uart_set_line_inverse(EMSUART_NUM, inverse_mask);
return EMS_TX_STATUS_OK;
}
@@ -164,9 +175,9 @@ uint16_t EMSuart::transmit(const uint8_t * buf, const uint8_t len) {
uart_get_buffered_data_len(EMSUART_NUM, &rx1);
} while ((rx1 == rx0) && (--timeoutcnt));
}
uart_set_line_inverse(EMSUART_NUM, UART_SIGNAL_TXD_INV);
uart_set_line_inverse(EMSUART_NUM, UART_SIGNAL_TXD_INV ^ inverse_mask);
delayMicroseconds(EMSUART_TX_BRK_EMS);
uart_set_line_inverse(EMSUART_NUM, 0);
uart_set_line_inverse(EMSUART_NUM, inverse_mask);
return EMS_TX_STATUS_OK;
}