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sparkfun_samd21_mini_usb board support

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Deadman
2024-02-27 17:04:14 +01:00
parent a0e5626bc5
commit 0a2444e100
6 changed files with 233 additions and 2 deletions
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18
hw/bsp/samd21/family.c
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@@ -172,8 +172,21 @@ uint32_t board_button_read(void) {
static void uart_init(void)
{
#if UART_SERCOM == 0
gpio_set_pin_function(PIN_PA06, PINMUX_PA06D_SERCOM0_PAD2);
gpio_set_pin_function(PIN_PA07, PINMUX_PA07D_SERCOM0_PAD3);
#if UART_TX_PIN == 6
gpio_set_pin_function(PIN_PA06, PINMUX_PA06D_SERCOM0_PAD2);
#elif UART_TX_PIN == 10
gpio_set_pin_function(PIN_PA10, PINMUX_PA10C_SERCOM0_PAD2);
#else
#error "UART_TX_PIN not supported"
#endif
#if UART_RX_PIN == 7
gpio_set_pin_function(PIN_PA07, PINMUX_PA07D_SERCOM0_PAD3);
#elif UART_RX_PIN == 11
gpio_set_pin_function(PIN_PA11, PINMUX_PA11C_SERCOM0_PAD3);
#else
#error "UART_RX_PIN not supported"
#endif
// setup clock (48MHz)
_pm_enable_bus_clock(PM_BUS_APBC, SERCOM0);
@@ -194,6 +207,7 @@ static void uart_init(void)
SERCOM_USART_CTRLB_TXEN | /* tx enabled */
SERCOM_USART_CTRLB_RXEN; /* rx enabled */
/* 115200 */
SERCOM0->USART.BAUD.reg = SERCOM_USART_BAUD_FRAC_FP(0) | SERCOM_USART_BAUD_FRAC_BAUD(26);
SERCOM0->USART.CTRLA.bit.ENABLE = 1; /* activate SERCOM */