// Too hard - details depend on target too much
//
USBDM_ErrorCode HCS12Unsecure::unsecureHCS12Target(void) {
unsigned long speed;
USBDMStatus_t usbdmStatus;
print("HCS12Unsecure::unsecureHCS12Target()\n");
USBDM_GetBDMStatus(&usbdmStatus);
USBDM_GetSpeed(&speed);
// Confirm speed
HCS12Unsecure dialogue(false, speed);
dialogue.Create(NULL);
int getCancelOK = dialogue.ShowModal();
if (getCancelOK != wxID_OK)
return BDM_RC_FAIL;
USBDM_SetSpeed(speed);
dialogue.bulkEraseMemory();
unsigned long bdmscr;
USBDM_ReadStatusReg(&bdmscr); // for debug = UNSEC should be set
dialogue.programSecurityLocation();
// closeLogFile();
return BDM_RC_OK;
}
//! Sets the communication speed.
//!
//! @param crystal_frequency crystal frequency in MHz.
//! This is used to determine the BDM communication speed (assumed
//! to be half the crystal frequency given).
//!
//! @return 0 => Success,\n !=0 => Fail
//!
TBDML_API unsigned char _tbdml_set_speed(float crystal_frequency) {
int speed;
print("_tbdml_set_target_type()");
speed = floor((1000/2)*crystal_frequency); // Convert to BDM comm freq in kHz
return USBDM_SetSpeed(speed); // Set BDM coms speed in kHz
}
//! Sets the communication speed.
//!
//! @param crystal_frequency crystal frequency in MHz.
//! This is used to determine the BDM communication speed (assumed
//! to be half the crystal frequency given).
//!
//! @return 0 => Success,\n !=0 => Fail
//!
OSBDM_API unsigned char _opensourcebdm_set_speed(float crystal_frequency) {
int speed;
print("_opensourcebdm_set_speed()");
speed = floor((1000/2)*crystal_frequency); // Convert to BDM comm freq in kHz
return USBDM_SetSpeed(speed); // Set BDM coms speed in kHz
}
//! \brief Sets the FCLKDIV/ECLKDIV register value based on
//! the BDM communication speed.
//!
//! Prepares the target for Flash and eeprom operations. \n
//! - Unprotects flash & eeprom [FPROT/EPROT registers]
//! - Set Flash clock divider [FCLKDIV/ECLKDIV registers] based busFrequency
//! - Clear flash & eeprom errors [FSTAT/ESTAT registers]
//! - Unprotects flash (FPROT)
//! - Set Flash clock divider (FCDIV)
//! - Disable COP
//!
//! @return error code, see \ref FlashError_t
//!
//! @note Assumes target has been reset & connected
//!
USBDM_ErrorCode HCS12Unsecure::initialiseTargetFlash() {
uint8_t fcdivCheckValue;
static const unsigned char allOnes = 0xFF;
static const unsigned char allZeroes = 0x00;
USBDM_ErrorCode rc;
print("HCS12Unsecure::initialiseTargetFlash()\n");
// Determine the FCLKDIV/ECLKDIV value
//=========================================
// Set user supplied speed
rc = USBDM_SetSpeed(busFrequency);
if ((rc != BDM_RC_OK) && (rc != BDM_RC_BDM_EN_FAILED))
return rc;
// Calculate the required FCDIV value
fcdivValue = findFlashDividerValue((long)round(busFrequency), 150, 200);
print("HCS12Unsecure::initialiseTargetFlash(): fBus = %ld kHz, FCDIV=0x%2.2X (%d)\n",
(long)round(busFrequency/1000.0), fcdivValue, fcdivValue);
if (fcdivValue == 0xFF)
return BDM_RC_UNKNOWN_SPEED;
// Disable COP
if (USBDM_WriteMemory(1, 1, HCS12DeviceData::getCOPCTL(), &COPCTL_value) != BDM_RC_OK)
return BDM_RC_FAIL;
// fcdivValue |= 0x80;
// Unprotect the Flash
if (USBDM_WriteMemory(1,1,HCS12DeviceData::getFPROTAddress(),&allOnes) != BDM_RC_OK)
return BDM_RC_FAIL;
// Clear any Flash errors (set FTSTMOD_WALL so all banks are affected)
if (USBDM_WriteMemory(1, 1, HCS12DeviceData::getFTSTMODAddress(), &HCS12_FTSTMOD_WRALL) != BDM_RC_OK)
return BDM_RC_FAIL;
if (USBDM_WriteMemory(1,1,HCS12DeviceData::getFSTATAddress(),&HCS12_clearFlashErrors) != BDM_RC_OK)
return BDM_RC_FAIL;
if (USBDM_WriteMemory(1, 1, HCS12DeviceData::getFTSTMODAddress(), &allZeroes) != BDM_RC_OK)
return BDM_RC_FAIL;
// Set FCLKDIV value & verify
if (USBDM_WriteMemory(1,1,HCS12DeviceData::getFCLKDIVAddress(),&fcdivValue) != BDM_RC_OK)
return BDM_RC_FAIL;
if (USBDM_ReadMemory(1,1,HCS12DeviceData::getFCLKDIVAddress(),&fcdivCheckValue) != BDM_RC_OK)
return BDM_RC_FAIL;
if (fcdivCheckValue != (fcdivValue|FCLKDIV_FDIVLD))
return BDM_RC_FAIL;
if (hasEEPROM) {
// Set up the eeprom
//====================================
// Assume errors here mean there isn't actually any EEPROM
// Unprotect the eeprom
if (USBDM_WriteMemory(1,1,HCS12DeviceData::getEPROTAddress(),&allOnes) != BDM_RC_OK)
hasEEPROM = false;
// Clear any eeprom errors
if (USBDM_WriteMemory(1,1,HCS12DeviceData::getESTATAddress(),&HCS12_clearFlashErrors) != BDM_RC_OK)
hasEEPROM = false;
// Set ECLKDIV value & verify
if (USBDM_WriteMemory(1,1,HCS12DeviceData::getECLKDIVAddress(),&fcdivValue) != BDM_RC_OK)
hasEEPROM = false;
if (USBDM_ReadMemory(1,1,HCS12DeviceData::getECLKDIVAddress(),&fcdivCheckValue) != BDM_RC_OK)
hasEEPROM = false;
if (fcdivCheckValue != (fcdivValue|ECLKDIV_EDIVLD))
hasEEPROM = false;
}
return BDM_RC_OK;
}
