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Use the PDI REPEAT instruction in the PDI programmer code to reduce protocol overhead and greatly improve transfer throughput. Switch bit-bang USART in the AVRISP project to Timer 1, so that Timer 0 can be used for hardware timeouts while waiting for the NVM bus or controller to become ready.

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This commit is contained in:
Dean Camera 2009-12-14 06:01:56 +00:00
parent 48e50b6b57
commit f3e4fbe512
5 changed files with 69 additions and 43 deletions
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10
Projects/AVRISP/Lib/NVMTarget.h
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@ -56,12 +56,7 @@
#endif
/* Defines: */
#define FLASH_BASE 0x00800000
#define EPPROM_BASE 0x008C0000
#define FUSE_BASE 0x008F0020
#define DATAMEM_BASE 0x01000000
#define PROD_SIGNATURE_BASE 0x008E0200
#define USER_SIGNATURE_BASE 0x008E0400
#define NVM_BUSY_TIMEOUT_MS 200
#define NVM_REG_ADDR0 0x00
#define NVM_REG_ADDR1 0x01
@ -113,8 +108,7 @@
/* Function Prototypes: */
void NVMTarget_SendNVMRegAddress(uint8_t Register);
void NVMTarget_SendAddress(uint32_t AbsoluteAddress);
bool NVMTarget_WaitWhileNVMBusBusy(void);
void NVMTarget_WaitWhileNVMControllerBusy(void);
bool NVMTarget_WaitWhileNVMControllerBusy(void);
uint32_t NVMTarget_GetMemoryCRC(uint8_t MemoryCommand);
void NVMTarget_ReadMemory(uint32_t ReadAddress, uint8_t* ReadBuffer, uint16_t ReadSize);
void NVMTarget_EraseMemory(uint8_t EraseCommand, uint32_t Address);