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Bit-bang ISP in the AVRISP-MKII clone project needs to set MOSI pin to the MSB of the data byte on startup, not the LSB.

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Dean Camera 2011-11-29 11:30:25 +00:00
parent 70f3d8e933
commit 24ca2d49fe
1 changed files with 2 additions and 1 deletions
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3
Projects/AVRISP-MKII/Lib/ISP/ISPTarget.c
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@ -243,7 +243,8 @@ uint8_t ISPTarget_TransferSoftSPIByte(const uint8_t Byte)
SoftSPI_Data = Byte; SoftSPI_Data = Byte;
SoftSPI_BitsRemaining = 8; SoftSPI_BitsRemaining = 8;
if (SoftSPI_Data & 0x01) /* Set initial MOSI pin state according to the byte to be transferred */
if (SoftSPI_Data & (1 << 7))
PORTB |= (1 << 2); PORTB |= (1 << 2);
else else
PORTB &= ~(1 << 2); PORTB &= ~(1 << 2);