void mcsdl_delay_test(INT32 nCount)
{
INT16 i;
MELFAS_DISABLE_BASEBAND_ISR(); // Disable Baseband touch interrupt ISR.
MELFAS_DISABLE_WATCHDOG_TIMER_RESET(); // Disable Baseband watchdog timer
//--------------------------------
// Repeating 'nCount' times
//--------------------------------
MCSDL_SET_GPIO_I2C();
MCSDL_GPIO_SCL_SET_OUTPUT(0);
MCSDL_GPIO_SDA_SET_OUTPUT(0);
MCSDL_RESETB_SET_OUTPUT(0);
MCSDL_GPIO_SCL_SET_HIGH();
for( i=0; i<nCount; i++ ){
#if 1
MCSDL_GPIO_SCL_SET_LOW();
mcsdl_delay(MCSDL_DELAY_20US);
MCSDL_GPIO_SCL_SET_HIGH();
mcsdl_delay(MCSDL_DELAY_100US);
#elif 0
MCSDL_GPIO_SCL_SET_LOW();
mcsdl_delay(MCSDL_DELAY_500US);
MCSDL_GPIO_SCL_SET_HIGH();
mcsdl_delay(MCSDL_DELAY_1MS);
#else
MCSDL_GPIO_SCL_SET_LOW();
mcsdl_delay(MCSDL_DELAY_25MS);
TKEY_INTR_SET_LOW();
mcsdl_delay(MCSDL_DELAY_45MS);
TKEY_INTR_SET_HIGH();
#endif
}
MCSDL_GPIO_SCL_SET_HIGH();
MELFAS_ROLLBACK_BASEBAND_ISR(); // Roll-back Baseband touch interrupt ISR.
MELFAS_ROLLBACK_WATCHDOG_TIMER_RESET(); // Roll-back Baseband watchdog timer
}
//--------------------------------------------
//
// Write ISP Mode entering signal
//
//--------------------------------------------
static void mcsdl_write_download_mode_signal(void)
{
int i;
UINT8 enter_code[14] = { 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 0, 0, 1, 1 };
//---------------------------
// ISP mode signal 0
//---------------------------
for(i=0; i<14; i++){
if( enter_code[i] ) {
TKEY_RESETB_SET_HIGH();
TKEY_INTR_SET_HIGH();
}else{
TKEY_RESETB_SET_LOW();
TKEY_INTR_SET_LOW();
}
TKEY_I2C_SCL_SET_HIGH();
mcsdl_delay(MCSDL_DELAY_15US);
TKEY_I2C_SCL_SET_LOW();
TKEY_RESETB_SET_LOW();
TKEY_INTR_SET_LOW();
mcsdl_delay(MCSDL_DELAY_100US);
}
TKEY_I2C_SCL_SET_HIGH();
mcsdl_delay(MCSDL_DELAY_100US);
TKEY_INTR_SET_HIGH();
TKEY_RESETB_SET_HIGH();
}
//------------------------------------------------------------------
//
// Enter Download mode ( MDS ISP or I2C ISP )
//
//------------------------------------------------------------------
static int mcsdl_enter_download_mode(void)
{
BOOLEAN bRet;
int nRet = MCSDL_RET_ENTER_DOWNLOAD_MODE_FAILED;
UINT8 cData=0;
//--------------------------------------------
// Tkey module reset
//--------------------------------------------
// TKEY_VDD_SET_LOW();
TKEY_CE_SET_LOW();
// TKEY_CE_SET_OUTPUT();
TKEY_I2C_CLOSE();
TKEY_INTR_SET_OUTPUT();
TKEY_INTR_SET_LOW();
// TKEY_RESETB_SET_LOW();
// TKEY_RESETB_SET_OUTPUT();
mcsdl_delay(MCSDL_DELAY_45MS); // Delay for Stable VDD
mcsdl_delay(MCSDL_DELAY_45MS);
// TKEY_VDD_SET_HIGH();
TKEY_CE_SET_HIGH();
TKEY_I2C_SDA_SET_HIGH();
mcsdl_delay(MCSDL_DELAY_25MS); // Delay '25 msec'
//-------------------------------
// Write 1st signal
//-------------------------------
mcsdl_write_download_mode_signal();
mcsdl_delay(MCSDL_DELAY_1MS); // Delay '2 msec'
mcsdl_delay(MCSDL_DELAY_1MS);
//-------------------------------
// Check response
//-------------------------------
bRet = _i2c_read_( MCSDL_I2C_SLAVE_ADDR_ORG, &cData, 1 );
if( bRet != TRUE || cData != MCSDL_I2C_SLAVE_READY_STATUS ){
printk("mcsdl_enter_download_mode() returns - ret : 0x%x & cData : 0x%x\n", nRet, cData);
goto MCSDL_ENTER_DOWNLOAD_MODE_FINISH;
}
nRet = MCSDL_RET_SUCCESS;
//-----------------------------------
// Entering MDS ISP mode finished.
//-----------------------------------
MCSDL_ENTER_DOWNLOAD_MODE_FINISH:
return nRet;
}