/** Removes access to the target's NVM controller and physically disables the target's physical PDI interface. */
void XMEGANVM_DisablePDI(void)
{
XMEGANVM_WaitWhileNVMBusBusy();
/* Clear the RESET key in the RESET PDI register to allow the XMEGA to run */
XPROGTarget_SendByte(PDI_CMD_STCS | PDI_RESET_REG);
XPROGTarget_SendByte(0x00);
/* Do it twice to make sure it takes effect (silicon bug?) */
XPROGTarget_SendByte(PDI_CMD_STCS | PDI_RESET_REG);
XPROGTarget_SendByte(0x00);
XPROGTarget_DisableTargetPDI();
}
/** Removes access to the target's NVM controller and physically disables the target's physical PDI interface. */
void XMEGANVM_DisablePDI(void)
{
XMEGANVM_WaitWhileNVMBusBusy();
/* Clear the RESET key in the RESET PDI register to allow the XMEGA to run - must perform this until the
* change takes effect, as in some cases it takes multiple writes (silicon bug?).
*/
do
{
/* Clear reset register */
XPROGTarget_SendByte(PDI_CMD_STCS | PDI_RESET_REG);
XPROGTarget_SendByte(0x00);
/* Read back the reset register, check to see if it took effect */
XPROGTarget_SendByte(PDI_CMD_LDCS | PDI_RESET_REG);
} while (XPROGTarget_ReceiveByte() != 0x00);
XPROGTarget_DisableTargetPDI();
}
/** Handler for the XPROG LEAVE_PROGMODE command to terminate the PDI programming connection with
* the attached device.
*/
static void XPROGProtocol_LeaveXPROGMode(void)
{
Endpoint_ClearOUT();
Endpoint_SelectEndpoint(AVRISP_DATA_IN_EPNUM);
Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
if (XPROG_SelectedProtocol == XPRG_PROTOCOL_PDI)
{
XMEGANVM_WaitWhileNVMBusBusy();
/* Clear the RESET key in the RESET PDI register to allow the XMEGA to run */
XPROGTarget_SendByte(PDI_CMD_STCS | PDI_RESET_REG);
XPROGTarget_SendByte(0x00);
/* Do it twice to make sure it takes affect (silicon bug?) */
XPROGTarget_SendByte(PDI_CMD_STCS | PDI_RESET_REG);
XPROGTarget_SendByte(0x00);
XPROGTarget_DisableTargetPDI();
}
else
{
TINYNVM_WaitWhileNVMBusBusy();
/* Clear the NVMEN bit in the TPI CONTROL register to disable TPI mode */
XPROGTarget_SendByte(TPI_CMD_SSTCS | TPI_CTRL_REG);
XPROGTarget_SendByte(0x00);
XPROGTarget_DisableTargetTPI();
}
Endpoint_Write_Byte(CMD_XPROG);
Endpoint_Write_Byte(XPRG_CMD_LEAVE_PROGMODE);
Endpoint_Write_Byte(XPRG_ERR_OK);
Endpoint_ClearIN();
}
/*! \brief Main function. Execution starts here.
*/
int main(void)
{
uint32_t serial_number[4];
// Read Device-ID from SAM3U. Do this before enabling interrupts etc.
flash_read_unique_id(serial_number, sizeof(serial_number));
configure_console();
irq_initialize_vectors();
cpu_irq_enable();
// Initialize the sleep manager
sleepmgr_init();
#if !SAMD21 && !SAMR21
sysclk_init();
board_init();
#else
system_init();
#endif
//Tri-state XPROG pins
XPROGTarget_DisableTargetPDI();
//Convert serial number to ASCII for USB Serial number
for(unsigned int i = 0; i < 4; i++){
sprintf(usb_serial_number+(i*8), "%08x", (unsigned int)serial_number[i]);
}
usb_serial_number[32] = 0;
printf("ChipWhisperer-Lite Online. Firmware build: %s/%s\n", __TIME__, __DATE__);
printf("Serial number: %s\n", usb_serial_number);
/* Enable SMC */
pmc_enable_periph_clk(ID_SMC);
gpio_configure_pin(PIN_EBI_DATA_BUS_D0, PIN_EBI_DATA_BUS_FLAG1);
gpio_configure_pin(PIN_EBI_DATA_BUS_D1, PIN_EBI_DATA_BUS_FLAG1);
gpio_configure_pin(PIN_EBI_DATA_BUS_D2, PIN_EBI_DATA_BUS_FLAG1);
gpio_configure_pin(PIN_EBI_DATA_BUS_D3, PIN_EBI_DATA_BUS_FLAG1);
gpio_configure_pin(PIN_EBI_DATA_BUS_D4, PIN_EBI_DATA_BUS_FLAG1);
gpio_configure_pin(PIN_EBI_DATA_BUS_D5, PIN_EBI_DATA_BUS_FLAG1);
gpio_configure_pin(PIN_EBI_DATA_BUS_D6, PIN_EBI_DATA_BUS_FLAG1);
gpio_configure_pin(PIN_EBI_DATA_BUS_D7, PIN_EBI_DATA_BUS_FLAG1);
gpio_configure_pin(PIN_EBI_NRD, PIN_EBI_NRD_FLAGS);
gpio_configure_pin(PIN_EBI_NWE, PIN_EBI_NWE_FLAGS);
gpio_configure_pin(PIN_EBI_NCS0, PIN_EBI_NCS0_FLAGS);
/* We don't use address mapping so don't enable this */
/*
gpio_configure_pin(PIN_EBI_ADDR_BUS_A1, PIN_EBI_ADDR_BUS_FLAG1);
gpio_configure_pin(PIN_EBI_ADDR_BUS_A2, PIN_EBI_ADDR_BUS_FLAG2);
gpio_configure_pin(PIN_EBI_ADDR_BUS_A3, PIN_EBI_ADDR_BUS_FLAG2);
gpio_configure_pin(PIN_EBI_ADDR_BUS_A4, PIN_EBI_ADDR_BUS_FLAG2);
gpio_configure_pin(PIN_EBI_ADDR_BUS_A5, PIN_EBI_ADDR_BUS_FLAG2);
gpio_configure_pin(PIN_EBI_ADDR_BUS_A6, PIN_EBI_ADDR_BUS_FLAG2);
gpio_configure_pin(PIN_EBI_ADDR_BUS_A7, PIN_EBI_ADDR_BUS_FLAG2);
gpio_configure_pin(PIN_EBI_ADDR_BUS_A8, PIN_EBI_ADDR_BUS_FLAG2);
gpio_configure_pin(PIN_EBI_ADDR_BUS_A9, PIN_EBI_ADDR_BUS_FLAG2);
gpio_configure_pin(PIN_EBI_ADDR_BUS_A10, PIN_EBI_ADDR_BUS_FLAG2);
gpio_configure_pin(PIN_EBI_ADDR_BUS_A11, PIN_EBI_ADDR_BUS_FLAG2);
gpio_configure_pin(PIN_EBI_ADDR_BUS_A12, PIN_EBI_ADDR_BUS_FLAG2);
gpio_configure_pin(PIN_EBI_ADDR_BUS_A13, PIN_EBI_ADDR_BUS_FLAG2);
gpio_configure_pin(PIN_EBI_ADDR_BUS_A14, PIN_EBI_ADDR_BUS_FLAG2);
gpio_configure_pin(PIN_EBI_ADDR_BUS_A15, PIN_EBI_ADDR_BUS_FLAG2);
gpio_configure_pin(PIN_EBI_ADDR_BUS_A16, PIN_EBI_ADDR_BUS_FLAG2);
gpio_configure_pin(PIN_EBI_ADDR_BUS_A17, PIN_EBI_ADDR_BUS_FLAG2);
gpio_configure_pin(PIN_EBI_ADDR_BUS_A18, PIN_EBI_ADDR_BUS_FLAG2);
gpio_configure_pin(PIN_EBI_ADDR_BUS_A19, PIN_EBI_ADDR_BUS_FLAG2);
gpio_configure_pin(PIN_EBI_ADDR_BUS_A20, PIN_EBI_ADDR_BUS_FLAG2);
*/
/* Configure EBI I/O for PSRAM connection */
printf("Setting up FPGA Communication\n");
/* complete SMC configuration between PSRAM and SMC waveforms. */
smc_set_setup_timing(SMC, 0, SMC_SETUP_NWE_SETUP(0)
| SMC_SETUP_NCS_WR_SETUP(1)
| SMC_SETUP_NRD_SETUP(1)
| SMC_SETUP_NCS_RD_SETUP(1));
smc_set_pulse_timing(SMC, 0, SMC_PULSE_NWE_PULSE(1)
| SMC_PULSE_NCS_WR_PULSE(1)
| SMC_PULSE_NRD_PULSE(3)
| SMC_PULSE_NCS_RD_PULSE(1));
smc_set_cycle_timing(SMC, 0, SMC_CYCLE_NWE_CYCLE(2)
| SMC_CYCLE_NRD_CYCLE(4));
smc_set_mode(SMC, 0, SMC_MODE_READ_MODE | SMC_MODE_WRITE_MODE
| SMC_MODE_DBW_BIT_8);
ui_init();
// Start USB stack to authorize VBus monitoring
udc_start();
/* Enable PCLK0 at 96 MHz */
genclk_enable_config(GENCLK_PCK_0, GENCLK_PCK_SRC_MCK, GENCLK_PCK_PRES_1);
//Following is 60MHz version
//genclk_enable_config(GENCLK_PCK_0, GENCLK_PCK_SRC_PLLBCK, GENCLK_PCK_PRES_4);
printf("Event Loop Entered, waiting...\n");
// The main loop manages only the power mode
// because the USB management is done by interrupt
while (true) {
sleepmgr_enter_sleep();
}
}
