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Rescue clock of the AVRISP-MKII moved to the AVR's OCR1A pin, so that the clock can be generated at all times when 125KHz ISP programming mode is selected.

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This commit is contained in:
Dean Camera 2010-11-02 07:57:23 +00:00
parent 40db485c79
commit 3bf760ad7d
7 changed files with 56 additions and 25 deletions
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12
Projects/AVRISP-MKII/Lib/ISP/ISPProtocol.c
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@ -64,12 +64,6 @@ void ISPProtocol_EnterISPMode(void)
CurrentAddress = 0;
/* Set up the synchronous USART to generate the .5MHz recovery clock on XCK pin */
UBRR1 = (F_CPU / 500000UL);
UCSR1B = (1 << TXEN1);
UCSR1C = (1 << UMSEL10) | (1 << UPM11) | (1 << USBS1) | (1 << UCSZ11) | (1 << UCSZ10) | (1 << UCPOL1);
DDRD |= (1 << 5);
/* Perform execution delay, initialize SPI bus */
ISPProtocol_DelayMS(Enter_ISP_Params.ExecutionDelayMS);
ISPTarget_Init();
@ -127,12 +121,6 @@ void ISPProtocol_LeaveISPMode(void)
ISPTarget_ShutDown();
ISPProtocol_DelayMS(Leave_ISP_Params.PostDelayMS);
/* Turn off the synchronous USART to terminate the recovery clock on XCK pin */
UBRR1 = (F_CPU / 500000UL);
UCSR1B = (1 << TXEN1);
UCSR1C = (1 << UMSEL10) | (1 << UPM11) | (1 << USBS1) | (1 << UCSZ11) | (1 << UCSZ10) | (1 << UCPOL1);
DDRD &= ~(1 << 5);
Endpoint_Write_Byte(CMD_LEAVE_PROGMODE_ISP);
Endpoint_Write_Byte(STATUS_CMD_OK);
Endpoint_ClearIN();