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USART always ready

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This commit is contained in:
Kevin Hamacher 2018-02-17 18:38:31 +01:00
parent 37ef30d1a1
commit 6841c7a6bf
1 changed files with 29 additions and 1 deletions
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30
src/devices/usart.rs
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@ -52,7 +52,35 @@ impl DeviceImpl for USART {
info!(self.log, "USART::Read(), not implemented");
0
},
USART_STATUS => self.status,
USART_STATUS => {
// USART_DREIF_bm 0x20
/*
6528 #define USART_RXCIF_bm 0x80 // Receive Interrupt Flag bit mask.
6529 #define USART_RXCIF_bp 7 // Receive Interrupt Flag bit position.
6530
6531 #define USART_TXCIF_bm 0x40 // Transmit Interrupt Flag bit mask.
6532 #define USART_TXCIF_bp 6 // Transmit Interrupt Flag bit position.
6533
6534 #define USART_DREIF_bm 0x20 // Data Register Empty Flag bit mask.
6535 #define USART_DREIF_bp 5 // Data Register Empty Flag bit position.
6536
6537 #define USART_FERR_bm 0x10 // Frame Error bit mask.
6538 #define USART_FERR_bp 4 // Frame Error bit position.
6539
6540 #define USART_BUFOVF_bm 0x08 // Buffer Overflow bit mask.
6541 #define USART_BUFOVF_bp 3 // Buffer Overflow bit position.
6542
6543 #define USART_PERR_bm 0x04 // Parity Error bit mask.
6544 #define USART_PERR_bp 2 // Parity Error bit position.
6545
6546 #define USART_RXB8_bm 0x01 // Receive Bit 8 bit mask.
6547 #define USART_RXB8_bp 0 // Receive Bit 8 bit position.
6548
*/
info!(self.log, "Checking USART status");
self.status | 0x20u8 // Data register empty flag.
}
USART_CTRLA => self.ctrla,
USART_CTRLB => self.ctrlb,
USART_CTRLC => self.ctrlc,