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cpu/sam0/uart: enable peripheral clock before accessing regs

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Jue 2022-10-28 20:11:05 +02:00
parent 4f25c1017d
commit cf5e207d62
1 changed files with 3 additions and 3 deletions
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6
cpu/sam0_common/periph/uart.c
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@ -162,6 +162,9 @@ int uart_init(uart_t uart, uint32_t baudrate, uart_rx_cb_t rx_cb, void *arg)
return UART_NODEV; return UART_NODEV;
} }
/* enable peripheral clock */
sercom_clk_en(dev(uart));
/* must disable here first to ensure idempotency */ /* must disable here first to ensure idempotency */
dev(uart)->CTRLA.reg = 0; dev(uart)->CTRLA.reg = 0;
@ -173,9 +176,6 @@ int uart_init(uart_t uart, uint32_t baudrate, uart_rx_cb_t rx_cb, void *arg)
/* configure pins */ /* configure pins */
_configure_pins(uart); _configure_pins(uart);
/* enable peripheral clock */
sercom_clk_en(dev(uart));
/* reset the UART device */ /* reset the UART device */
_reset(dev(uart)); _reset(dev(uart));