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| author | Dean Camera <dean@fourwalledcubicle.com> | 2009-12-14 05:15:42 +0000 |
|---|---|---|
| committer | Dean Camera <dean@fourwalledcubicle.com> | 2009-12-14 05:15:42 +0000 |
| commit | 48e50b6b578fa7a74b4f33f067aa684e3469850e (patch) | |
| tree | b6bb45e6a9eb32f3e764cd6285380a3dcd30c424 /Projects/AVRISP/Lib/NVMTarget.c | |
| parent | 8a55d80e7e1214b8625b413fa0123a8b6ce9c825 (diff) | |
| download | lufa-48e50b6b578fa7a74b4f33f067aa684e3469850e.tar.gz lufa-48e50b6b578fa7a74b4f33f067aa684e3469850e.tar.bz2 lufa-48e50b6b578fa7a74b4f33f067aa684e3469850e.zip | |
Added memory erase handling to the PDI protocol in the AVRISP project.
Diffstat (limited to 'Projects/AVRISP/Lib/NVMTarget.c')
| -rw-r--r-- | Projects/AVRISP/Lib/NVMTarget.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/Projects/AVRISP/Lib/NVMTarget.c b/Projects/AVRISP/Lib/NVMTarget.c index fee432cfb..a23ccf292 100644 --- a/Projects/AVRISP/Lib/NVMTarget.c +++ b/Projects/AVRISP/Lib/NVMTarget.c @@ -137,4 +137,31 @@ void NVMTarget_ReadMemory(uint32_t ReadAddress, uint8_t* ReadBuffer, uint16_t Re }
}
+void NVMTarget_EraseMemory(uint8_t EraseCommand, uint32_t Address)
+{
+ NVMTarget_WaitWhileNVMControllerBusy();
+
+ PDITarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2));
+ NVMTarget_SendNVMRegAddress(NVM_REG_CMD);
+ PDITarget_SendByte(EraseCommand);
+
+ if (EraseCommand == NVM_CMD_CHIPERASE)
+ {
+ /* Set CMDEX bit in NVM CTRLA register to start the chip erase */
+ PDITarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2));
+ NVMTarget_SendNVMRegAddress(NVM_REG_CTRLA);
+ PDITarget_SendByte(1 << 0);
+ }
+ else
+ {
+ /* Other erase modes just need us to address a byte within the target memory space */
+ PDITarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2));
+ NVMTarget_SendAddress(Address);
+ PDITarget_SendByte(0x00);
+ }
+
+ NVMTarget_WaitWhileNVMBusBusy();
+ NVMTarget_WaitWhileNVMControllerBusy();
+}
+
#endif
|