ahoneybun/qmk_firmware
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PDI NVM enable is fast enough that bare polling is enough without a fixed delay in between each attempt. Make sure the USART transmitter is enabled explicitly when the USART is configured, so that repeated attempts to re-enter PDI mode don't fail due to TXEN not being set.

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This commit is contained in:
Dean Camera 2009-12-11 04:56:52 +00:00
parent 66201a05e9
commit 33a46b243a
2 changed files with 6 additions and 6 deletions
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4
Projects/AVRISP/Lib/PDIProtocol.c
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@ -115,11 +115,9 @@ static void PDIProtocol_EnterXPROGMode(void)
PDITarget_SendByte(PDI_NVMENABLE_KEY[i - 1]);
/* Poll the STATUS register to check to see if NVM access has been enabled */
uint8_t NVMAttemptsRemaining = 150;
uint8_t NVMAttemptsRemaining = 255;
while (NVMAttemptsRemaining)
{
_delay_ms(1);
PDITarget_SendByte(PDI_CMD_LDCS | PD_STATUS_REG);
if (PDITarget_ReceiveByte() & PDI_STATUS_NVM)
break;