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Merge pull request #15518 from aabadie/pr/cpu/cc2538_uart_irq

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cpu/cc2538: enable UART IRQ only if cb is not NULL
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benpicco 2020-11-28 18:51:27 +01:00 committed by GitHub
commit c337089de5
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1 changed files with 2 additions and 4 deletions
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6
cpu/cc2538/periph/uart.c
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@ -145,15 +145,13 @@ int uart_init(uart_t uart, uint32_t baudrate, uart_rx_cb_t rx_cb, void *arg)
/* Configure line control for 8-bit, no parity, 1 stop bit and enable */ /* Configure line control for 8-bit, no parity, 1 stop bit and enable */
u->cc2538_uart_lcrh.LCRH = (WLEN_8_BITS << 5) | FEN; u->cc2538_uart_lcrh.LCRH = (WLEN_8_BITS << 5) | FEN;
/* register callbacks */ /* register callbacks and enable UART irq */
if (rx_cb) { if (rx_cb) {
uart_ctx[uart].rx_cb = rx_cb; uart_ctx[uart].rx_cb = rx_cb;
uart_ctx[uart].arg = arg; uart_ctx[uart].arg = arg;
NVIC_EnableIRQ(UART_IRQ(uart_num));
} }
/* enable UART interrupt */
NVIC_EnableIRQ(UART_IRQ(uart_num));
/* UART Enable */ /* UART Enable */
u->cc2538_uart_ctl.CTLbits.UARTEN = 1; u->cc2538_uart_ctl.CTLbits.UARTEN = 1;