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.

2009-12-11 04:56:52 +00:00
parent 66201a05e9
commit 33a46b243a
2 changed files with 6 additions and 6 deletions
@@ -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;