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Fixes UART pin setting + adds CTS/RTS HW Flow Control (#6272)

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* fixes setPins and begin to keep rx/tx unmodified

* adds Hardware Flow Control mode and CTS/RTS pin setting

* adds Hardware Flow Control mode and CTS/RTS pin setting

* adds Hardware Flow Control mode and CTS/RTS pin setting

* adds Hardware Flow Control mode and CTS/RTS pin setting

* Code Review
This commit is contained in:
Rodrigo Garcia
2022-02-16 22:28:46 -03:00
committed by GitHub
parent 01303b700d
commit 50e9772ecf
4 changed files with 75 additions and 30 deletions
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15
cores/esp32/esp32-hal-uart.h
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@ -48,6 +48,14 @@ extern "C" {
#define SERIAL_7O2 0x800003b
#define SERIAL_8O2 0x800003f
// These are Hardware Flow Contol possible usage
// equivalent to UDF enum uart_hw_flowcontrol_t from
// https://github.com/espressif/esp-idf/blob/master/components/hal/include/hal/uart_types.h#L75-L81
#define HW_FLOWCTRL_DISABLE 0x0 // disable HW Flow Control
#define HW_FLOWCTRL_RTS 0x1 // use only RTS PIN for HW Flow Control
#define HW_FLOWCTRL_CTS 0x2 // use only CTS PIN for HW Flow Control
#define HW_FLOWCTRL_CTS_RTS 0x3 // use both CTS and RTS PIN for HW Flow Control
struct uart_struct_t;
typedef struct uart_struct_t uart_t;
@ -76,7 +84,12 @@ void uartSetDebug(uart_t* uart);
int uartGetDebug();
bool uartIsDriverInstalled(uart_t* uart);
void uartSetPins(uart_t* uart, uint8_t rxPin, uint8_t txPin);
// Negative Pin Number will keep it unmodified, thus this function can set individual pins
void uartSetPins(uart_t* uart, int8_t rxPin, int8_t txPin, int8_t ctsPin, int8_t rtsPin);
// Enables or disables HW Flow Control function -- needs also to set CTS and/or RTS pins
void uartSetHwFlowCtrlMode(uart_t *uart, uint8_t mode, uint8_t threshold);
void uartStartDetectBaudrate(uart_t *uart);
unsigned long uartDetectBaudrate(uart_t *uart);