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avr: implement UART interface

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Signed-off-by: Ron Evans <ron@hybridgroup.com>
This commit is contained in:
Ron Evans
2018-09-26 12:34:04 +02:00
committed by Ayke van Laethem
parent bcf441ccba
commit 4c8a725d78
3 changed files with 166 additions and 2 deletions
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src/runtime/runtime_avr.go
+3 -2
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@@ -54,9 +54,10 @@ func init() {
}
func initUART() {
// Initialize UART at 115200 baud when running at 16MHz.
// Initialize UART at 9600 baud when running at 16MHz.
*avr.UBRR0H = 0
*avr.UBRR0L = 8
*avr.UBRR0L = 0x67
*avr.UCSR0B = avr.UCSR0B_RXEN0 | avr.UCSR0B_TXEN0 // enable RX and TX
*avr.UCSR0C = avr.UCSR0C_UCSZ01 | avr.UCSR0C_UCSZ00 // 8-bits data
}