diff options
Diffstat (limited to 'Projects/AVRISP/Lib/PDIProtocol.c')
| -rw-r--r-- | Projects/AVRISP/Lib/PDIProtocol.c | 27 |
1 files changed, 8 insertions, 19 deletions
diff --git a/Projects/AVRISP/Lib/PDIProtocol.c b/Projects/AVRISP/Lib/PDIProtocol.c index 864d4e9c3..c1e7bf2ee 100644 --- a/Projects/AVRISP/Lib/PDIProtocol.c +++ b/Projects/AVRISP/Lib/PDIProtocol.c @@ -104,18 +104,13 @@ static void PDIProtocol_EnterXPROGMode(void) Endpoint_ClearOUT();
Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
- PDIDATA_LINE_DDR |= PDIDATA_LINE_MASK;
- PDICLOCK_LINE_DDR |= PDICLOCK_LINE_MASK;
-
- /* Must hold DATA line high for at least 90nS to enable PDI interface */
- PDIDATA_LINE_PORT |= PDIDATA_LINE_MASK;
- asm volatile ("NOP"::);
- asm volatile ("NOP"::);
-
- /* Toggle CLOCK line 16 times within 100uS of the original 90nS timeout to keep PDI interface enabled */
- for (uint8_t i = 0; i < 16; i++)
- TOGGLE_PDI_CLOCK;
+ /* Enable PDI programming mode with the attached target */
+ PDITarget_EnableTargetPDI();
+ /* Store the RESET ket into the RESET PDI register to complete the handshake */
+ PDITarget_SendByte(PDI_CMD_STCS | PD_RESET_REG);
+ PDITarget_SendByte(PDI_RESET_KEY);
+
/* Enable access to the XPROG NVM bus by sending the documented NVM access key to the device */
PDITarget_SendByte(PDI_CMD_KEY);
for (uint8_t i = 0; i < sizeof(PDI_NVMENABLE_KEY); i++)
@@ -140,14 +135,8 @@ static void PDIProtocol_LeaveXPROGMode(void) Endpoint_ClearOUT();
Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
- /* Set DATA and CLOCK lines to inputs */
- PDIDATA_LINE_DDR &= ~PDIDATA_LINE_MASK;
- PDICLOCK_LINE_DDR &= ~PDICLOCK_LINE_MASK;
-
- /* Tristate DATA and CLOCK lines */
- PDIDATA_LINE_PORT &= ~PDIDATA_LINE_MASK;
- PDICLOCK_LINE_PORT &= ~PDICLOCK_LINE_MASK;
-
+ PDITarget_DisableTargetPDI();
+
Endpoint_Write_Byte(CMD_XPROG);
Endpoint_Write_Byte(XPRG_CMD_LEAVE_PROGMODE);
Endpoint_Write_Byte(XPRG_ERR_OK);
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