1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
// Copyright 2024 Stefan Kerkmann (@KarlK90)
// Copyright 2021 QMK
// SPDX-License-Identifier: GPL-2.0-or-later
#include "uart.h"
#if defined(MCU_RP)
// 38400 baud, 8 data bits, 1 stop bit, no parity, no flow control
static SIOConfig sioConfig = {
.baud = SIO_DEFAULT_BITRATE,
.UARTLCR_H = (UART_UARTLCR_H_WLEN_8BITS | UART_UARTLCR_H_FEN),
.UARTCR = 0U,
.UARTIFLS = (UART_UARTIFLS_RXIFLSEL_1_8F | UART_UARTIFLS_TXIFLSEL_1_8E),
.UARTDMACR = 0U,
};
#else
static SIOConfig sioConfig = {
.baud = SIO_DEFAULT_BITRATE,
# if defined(MCU_STM32) && defined(CHIBIOS_HAL_USARTv3)
.presc = USART_PRESC1,
# endif
.cr1 = UART_CR1,
.cr2 = UART_CR2,
.cr3 = UART_CR3,
};
#endif
void uart_init(uint32_t baud) {
static bool is_initialised = false;
if (is_initialised) {
return;
}
is_initialised = true;
sioConfig.baud = baud;
#if defined(USE_GPIOV1)
palSetLineMode(UART_TX_PIN, UART_TX_PAL_MODE);
palSetLineMode(UART_RX_PIN, UART_RX_PAL_MODE);
#else
palSetLineMode(UART_TX_PIN, PAL_MODE_ALTERNATE(UART_TX_PAL_MODE) | PAL_OUTPUT_TYPE_PUSHPULL | PAL_OUTPUT_SPEED_HIGHEST);
palSetLineMode(UART_RX_PIN, PAL_MODE_ALTERNATE(UART_RX_PAL_MODE) | PAL_OUTPUT_TYPE_PUSHPULL | PAL_OUTPUT_SPEED_HIGHEST);
#endif
sioStart(&UART_DRIVER, &sioConfig);
}
void uart_write(uint8_t data) {
chnPutTimeout(&UART_DRIVER, data, TIME_INFINITE);
}
uint8_t uart_read(void) {
msg_t result = chnGetTimeout(&UART_DRIVER, TIME_INFINITE);
if (sioHasRXErrorsX(&UART_DRIVER)) {
sioGetAndClearErrors(&UART_DRIVER);
}
return (uint8_t)result;
}
void uart_transmit(const uint8_t *data, uint16_t length) {
chnWrite(&UART_DRIVER, data, length);
}
void uart_receive(uint8_t *data, uint16_t length) {
chnRead(&UART_DRIVER, data, length);
if (sioHasRXErrorsX(&UART_DRIVER)) {
sioGetAndClearErrors(&UART_DRIVER);
}
}
bool uart_available() {
return !sioIsRXEmptyX(&UART_DRIVER);
}
|
