//-----------------------------------------------------------------//
// Setup ADC
// ADC_CLK = 4 MHz
// ADC single conversion time is ADC_StartDelay +
// (29 to 36 ADC clock cycles depending on ADC_DelayGo)
// ADC clock = 4MHz / 128 = 31.250kHz (T = 32uS)
//-----------------------------------------------------------------//
void HW_ADCInit(void)
{
ADC_InitTypeDef sADC;
ADCx_InitTypeDef sADCx;
// ADC Configuration
// Reset all ADC settings
ADC_DeInit();
ADC_StructInit(&sADC);
sADC.ADC_SynchronousMode = ADC_SyncMode_Independent;
sADC.ADC_StartDelay = 10;
sADC.ADC_TempSensor = ADC_TEMP_SENSOR_Enable;
sADC.ADC_TempSensorAmplifier = ADC_TEMP_SENSOR_AMPLIFIER_Enable;
sADC.ADC_TempSensorConversion = ADC_TEMP_SENSOR_CONVERSION_Enable;
sADC.ADC_IntVRefConversion = ADC_VREF_CONVERSION_Enable;
sADC.ADC_IntVRefTrimming = 1;
ADC_Init (&sADC);
// ADC1 Configuration
ADCx_StructInit (&sADCx);
sADCx.ADC_ClockSource = ADC_CLOCK_SOURCE_ADC;
sADCx.ADC_SamplingMode = ADC_SAMPLING_MODE_SINGLE_CONV;
sADCx.ADC_ChannelSwitching = ADC_CH_SWITCHING_Disable;
sADCx.ADC_ChannelNumber = ADC_CH_TEMP_SENSOR;
sADCx.ADC_Channels = 0;
sADCx.ADC_LevelControl = ADC_LEVEL_CONTROL_Disable;
sADCx.ADC_LowLevel = 0;
sADCx.ADC_HighLevel = 0;
sADCx.ADC_VRefSource = ADC_VREF_SOURCE_EXTERNAL;
sADCx.ADC_IntVRefSource = ADC_INT_VREF_SOURCE_EXACT;
sADCx.ADC_Prescaler = ADC_CLK_div_128;
sADCx.ADC_DelayGo = 0; // CHECKME
ADC1_Init (&sADCx);
ADC2_Init (&sADCx);
// Disable ADC interupts
ADC1_ITConfig((ADCx_IT_END_OF_CONVERSION | ADCx_IT_OUT_OF_RANGE), DISABLE);
ADC2_ITConfig((ADCx_IT_END_OF_CONVERSION | ADCx_IT_OUT_OF_RANGE), DISABLE);
// ADC1 enable
ADC1_Cmd (ENABLE);
ADC2_Cmd (ENABLE);
//-------------------//
/* ADC1_SetChannel(ADC_CH_TEMP_SENSOR);
ADC1_Start();
while( ADC_GetFlagStatus(ADC1_FLAG_END_OF_CONVERSION)==RESET );
temp_adc = ADC1_GetResult();
ADC1_Start();
while( ADC_GetFlagStatus(ADC1_FLAG_END_OF_CONVERSION)==RESET );
temp_adc = ADC1_GetResult();
temp_adc = temp_adc;
*/
}
//collection of ADC data and also real precise values from external voltmeter
//external data is entered with joystick movement as 0.000 number
static unsigned int ADCCollectDataCalib(unsigned int * ADCBuffer, double * ADCRealValues)
{
unsigned int i;
unsigned int multiplier;
signed int Voltage;
unsigned char cursorPos;
unsigned char ArrowChar = '^';
unsigned char JoyUp,JoyDown,JoyLeft,JoyRight,JoySel;
//disable ADC interrupts
ADC2_ITConfig(DISABLE);
//enable ADC
ADC2_Init(ADC2_CONVERSIONMODE_SINGLE, ADC2_CHANNEL_12, ADC2_PRESSEL_FCPU_D6, ADC2_EXTTRIG_TIM, DISABLE, ADC2_ALIGN_RIGHT, ADC2_SCHMITTTRIG_CHANNEL12, DISABLE);
//clear end of conversion bit
ADC2_ClearFlag();
//for joystick control (init)
//pull-ups on on all used buttons
GPIOB->CR1 |= 0xF0;
GPIOD->CR1 |= 0x80;
Voltage = 0;
multiplier = 1000;
cursorPos = 2;
//print values on LCD display
LCD_Clear();
LCD_SetCursorPos(LCD_LINE1, 1);
LCD_PrintDec4(Voltage);
LCD_PrintString(LCD_LINE1, DISABLE, ENABLE, " =Real U");
LCD_SetCursorPos(LCD_LINE2, cursorPos/2);
LCD_PrintChar(ArrowChar);
//set external voltage - measure it with external voltmeter - enter voltmeter
//value into LCD - measure ADC data - store real and ADC data to buffers
//finish data collecting by KEY button on PCB board
for(i=0; i<ADC_BUFFER_SIZE; i++)
{
LCD_SetCursorPos(LCD_LINE2, 0);
LCD_PrintDec2(i);
while(JOY_SEL);
while(!JOY_SEL)
{
if(BUTTON_LOW)
break;
JoyUp = JOY_UP;
JoyDown = JOY_DOWN;
JoyLeft = JOY_LEFT;
JoyRight= JOY_RIGHT;
JoySel = JOY_SEL;
if(JoyLeft)//increase multiplier
{
if (cursorPos!=2)
{
multiplier *= 10;
cursorPos -= 1;
}
}
if(JoyRight)//decrease multiplier
{
if (cursorPos!=5)
{
multiplier /= 10;
cursorPos += 1;
}
}
if(JoyRight || JoyLeft)//repaint cursor position
{
LCD_PrintString(LCD_LINE2, DISABLE, DISABLE, " ");//clear cursor
LCD_SetCursorPos(LCD_LINE2, cursorPos/2);//set cursor position
if(cursorPos & 1)
LCD_PrintChar(' ');//print space
LCD_PrintChar(ArrowChar);//print cursor
while (JOY_RIGHT || JOY_LEFT);
delay(1000l);
}
if(JoyUp)//increase real value
{
Voltage += multiplier;
}
if(JoyDown)//decrease real value
{
Voltage -= multiplier;
}
if(JoyUp || JoyDown)//repaint real value
{
LCD_PrintString(LCD_LINE1, DISABLE, DISABLE, " ");//clear voltage
if (Voltage<0)
{
LCD_SetCursorPos(LCD_LINE1, 1);
LCD_PrintDec4(-Voltage);
LCD_SetCursorPos(LCD_LINE1, 0);
LCD_PrintChar('-');//print sign
}
else
{
LCD_SetCursorPos(LCD_LINE1, 1);
LCD_PrintDec4(Voltage);
LCD_SetCursorPos(LCD_LINE1, 0);
LCD_PrintChar('+');//print sign
}
while (JOY_UP || JOY_DOWN);
delay(1000l);
}
//start single conversion
ADC2_StartConversion();
while (!ADC2_GetFlagStatus());
//clear end of conversion bit
ADC2_ClearFlag();
//collect ADC value and display it
LCD_SetCursorPos(LCD_LINE2, 5);//set cursor position
LCD_PrintDec4(ADC2_GetConversionValue());
}
//stop collecting if KEY buttom pressed
if(BUTTON_LOW)
{
break;
}
//otherwise collect ADC data (+ real data) and store them
else
{
//start single conversion
ADC2_StartConversion();
while (!ADC2_GetFlagStatus());
//clear end of conversion bit
ADC2_ClearFlag();
//collect ADC value
ADCBuffer[i] = ADC2_GetConversionValue();
//collect real value
ADCRealValues[i] = (double)Voltage/1000;
}
}
return i;
}//ADCCollectDataCalib