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Fix error in AVRISP programmer when repeatedly using PDI mode via the hardware USART due to the SendByte routine not clearing the Transmit Complete USART flag.

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This commit is contained in:
Dean Camera 2009-12-15 00:14:17 +00:00
parent bb38793312
commit a7880ac1cd
4 changed files with 57 additions and 39 deletions
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7
Projects/AVRISP/Lib/PDITarget.c
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@ -102,7 +102,7 @@ void PDITarget_EnableTargetPDI(void)
/* Set up the synchronous USART for XMEGA communications -
8 data bits, even parity, 2 stop bits */
UBRR1 = 10;
UBRR1 = (F_CPU / 1000000UL);
UCSR1B = (1 << TXEN1);
UCSR1C = (1 << UMSEL10) | (1 << UPM11) | (1 << USBS1) | (1 << UCSZ11) | (1 << UCSZ10) | (1 << UCPOL1);
@ -167,15 +167,16 @@ void PDITarget_SendByte(uint8_t Byte)
PORTD |= (1 << 3);
DDRD |= (1 << 3);
UCSR1B &= ~(1 << RXEN1);
UCSR1B |= (1 << TXEN1);
UCSR1B &= ~(1 << RXEN1);
IsSending = true;
}
/* Wait until there is space in the hardware Tx buffer before writing */
while (!(UCSR1A & (1 << UDRE1)));
UDR1 = Byte;
UCSR1A |= (1 << TXC1);
UDR1 = Byte;
#else
/* Switch to Tx mode if currently in Rx mode */
if (!(IsSending))