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atsam: Add get_pclock_frequency() helper function

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Add get_pclock_frequency() and use it to calculate peripheral clocks.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor
2021-11-20 13:47:17 -05:00
parent 92ca111986
commit bb08dc7ae9
7 changed files with 22 additions and 12 deletions
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2
src/atsam/serial.c
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@@ -68,7 +68,7 @@ serial_init(void)
// Enable uart
Port->UART_MR = (UART_MR_PAR_NO | UART_MR_CHMODE_NORMAL);
Port->UART_BRGR = SystemCoreClock / (16 * CONFIG_SERIAL_BAUD);
Port->UART_BRGR = get_pclock_frequency(Pmc_id) / (16 * CONFIG_SERIAL_BAUD);
Port->UART_IER = UART_IER_RXRDY;
armcm_enable_irq(UARTx_Handler, UARTx_IRQn, 0);
Port->UART_CR = UART_CR_RXEN | UART_CR_TXEN;