/**************************************************************************//**
\brief Function to do an erase-write on one page in the flash.
\note The maximum pageAddress must not be exceeded. The maximum number of
pages can be found in the datasheet.
\param[in] pageAddress Page address to the page to erase/write.
******************************************************************************/
static void flashEraseWritePage(uint16_t pageAddress)
{
// Calculate actual start address of the page.
uint32_t tableAddress = (uint32_t)pageAddress * (uint32_t)FLASH_PAGE_SIZE;
// Perform page erase.
SP_EraseApplicationPage(tableAddress);
// Wait for SPM to finish.
flashWaitForSPM();
// Perform page write.
SP_WriteApplicationPage(tableAddress);
// Wait for SPM to finish.
flashWaitForSPM();
// enable rww section
SP_RWWSectionEnable();
// Wait for SPM to finish.
flashWaitForSPM();
}
void pollEndpoint(void){
if (USB_ep_out_received(1)){
pageOffs += EP1_SIZE;
if (pageOffs == APP_SECTION_PAGE_SIZE){
// Write a page to flash
SP_LoadFlashPage(pageBuf);
NVM.CMD = NVM_CMD_NO_OPERATION_gc;
SP_WriteApplicationPage(page*APP_SECTION_PAGE_SIZE);
SP_WaitForSPM();
NVM.CMD = NVM_CMD_NO_OPERATION_gc;
page++;
pageOffs = 0;
}
if (page * APP_SECTION_PAGE_SIZE < APP_SECTION_END){
// If there's remaining room in flash, configure the endpoint to accept more data
USB_ep_out_start(1, &pageBuf[pageOffs]);
}
}
}
/**************************************************************************************************
* Handle received HID set feature reports
*/
void HID_set_feature_report_out(uint8_t *report)
{
uint8_t response[UDI_HID_REPORT_OUT_SIZE];
response[0] = report[0] | 0x80;
response[1] = report[1];
response[2] = report[2];
uint16_t addr;
addr = *(uint16_t *)(report+1);
switch(report[0])
{
// no-op
case CMD_NOP:
break;
// write to RAM page buffer
case CMD_RESET_POINTER:
page_ptr = 0;
return;
// read from RAM page buffer
case CMD_READ_BUFFER:
memcpy(response, &page_buffer[page_ptr], UDI_HID_REPORT_OUT_SIZE);
page_ptr += UDI_HID_REPORT_OUT_SIZE;
page_ptr &= APP_SECTION_PAGE_SIZE-1;
break;
// erase entire application section
case CMD_ERASE_APP_SECTION:
SP_WaitForSPM();
SP_EraseApplicationSection();
return;
// calculate application and bootloader section CRCs
case CMD_READ_FLASH_CRCS:
SP_WaitForSPM();
*(uint32_t *)&response[3] = SP_ApplicationCRC();
*(uint32_t *)&response[7] = SP_BootCRC();
break;
// read MCU IDs
case CMD_READ_MCU_IDS:
response[3] = MCU.DEVID0;
response[4] = MCU.DEVID1;
response[5] = MCU.DEVID2;
response[6] = MCU.REVID;
break;
// read fuses
case CMD_READ_FUSES:
response[3] = SP_ReadFuseByte(0);
response[4] = SP_ReadFuseByte(1);
response[5] = SP_ReadFuseByte(2);
response[6] = 0xFF;
response[7] = SP_ReadFuseByte(4);
response[8] = SP_ReadFuseByte(5);
break;
// write RAM page buffer to application section page
case CMD_WRITE_PAGE:
if (addr > (APP_SECTION_SIZE / APP_SECTION_PAGE_SIZE)) // out of range
{
response[1] = 0xFF;
response[2] = 0xFF;
break;
}
SP_WaitForSPM();
SP_LoadFlashPage(page_buffer);
SP_WriteApplicationPage(APP_SECTION_START + ((uint32_t)addr * APP_SECTION_PAGE_SIZE));
page_ptr = 0;
break;
// read application page to RAM buffer and return first 32 bytes
case CMD_READ_PAGE:
if (addr > (APP_SECTION_SIZE / APP_SECTION_PAGE_SIZE)) // out of range
{
response[1] = 0xFF;
response[2] = 0xFF;
}
else
{
memcpy_P(page_buffer, (const void *)(APP_SECTION_START + (APP_SECTION_PAGE_SIZE * addr)), APP_SECTION_PAGE_SIZE);
memcpy(&response[3], page_buffer, 32);
page_ptr = 0;
}
break;
// erase user signature row
case CMD_ERASE_USER_SIG_ROW:
SP_WaitForSPM();
SP_EraseUserSignatureRow();
break;
// write RAM buffer to user signature row
case CMD_WRITE_USER_SIG_ROW:
SP_WaitForSPM();
SP_LoadFlashPage(page_buffer);
SP_WriteUserSignatureRow();
break;
// read user signature row to RAM buffer and return first 32 bytes
case CMD_READ_USER_SIG_ROW:
if (addr > (USER_SIGNATURES_PAGE_SIZE - 32))
{
response[1] = 0xFF;
response[2] = 0xFF;
}
else
{
memcpy_P(page_buffer, (const void *)(USER_SIGNATURES_START + addr), USER_SIGNATURES_SIZE);
memcpy(&response[3], page_buffer, 32);
page_ptr = 0;
}
break;
case CMD_READ_SERIAL:
{
uint8_t i;
uint8_t j = 3;
uint8_t b;
for (i = 0; i < 6; i++)
{
b = SP_ReadCalibrationByte(offsetof(NVM_PROD_SIGNATURES_t, LOTNUM0) + i);
response[j++] = hex_to_char(b >> 4);
response[j++] = hex_to_char(b & 0x0F);
}
response[j++] = '-';
b = SP_ReadCalibrationByte(offsetof(NVM_PROD_SIGNATURES_t, LOTNUM0) + 6);
response[j++] = hex_to_char(b >> 4);
response[j++] = hex_to_char(b & 0x0F);
response[j++] = '-';
for (i = 7; i < 11; i++)
{
b = SP_ReadCalibrationByte(offsetof(NVM_PROD_SIGNATURES_t, LOTNUM0) + i);
response[j++] = hex_to_char(b >> 4);
response[j++] = hex_to_char(b & 0x0F);
}
response[j] = '\0';
break;
}
case CMD_READ_BOOTLOADER_VERSION:
response[3] = BOOTLOADER_VERSION;
break;
case CMD_RESET_MCU:
reset_do_soft_reset();
response[1] = 0xFF; // failed
break;
case CMD_READ_EEPROM:
if (addr > (EEPROM_SIZE - 32))
{
response[1] = 0xFF;
response[2] = 0xFF;
}
else
{
EEP_EnableMapping();
memcpy_P(page_buffer, (const void *)(MAPPED_EEPROM_START + addr), APP_SECTION_PAGE_SIZE);
EEP_DisableMapping();
memcpy(&response[3], page_buffer, 32);
page_ptr = 0;
}
break;
case CMD_WRITE_EEPROM:
if (addr > (EEPROM_SIZE / EEPROM_PAGE_SIZE))
{
response[1] = 0xFF;
response[2] = 0xFF;
}
else
{
EEP_LoadPageBuffer(&report[3], EEPROM_PAGE_SIZE);
EEP_AtomicWritePage(addr);
}
break;
// unknown command
default:
response[0] = 0xFF;
break;
}
udi_hid_generic_send_report_in(response);
}