/***************************************************************************************************
uint16_t ADC_GetAdcValue(uint8_t var_adcChannel_u8);
****************************************************************************************************
* I/P Arguments: uint8_t(channel number).
* Return value : uint16_t(16 bit ADC result)
* description :This function does the ADC conversion for the Selected Channel
and returns the converted 16bit result.
The adc value per bit depends on the resolution of the ADC.
For ADC0809(8-bit ADC)) the adc value per lsb will be 5/255=0.0196V.
For AVR/PIC(10-bit adc) the adc value per lsb will be 5/1023=0048v
___ ___ ___ ___ ___ ___ ___ ___ ___
| | | | | | | | | | | | | | | | | | |
Clock: |___| |___| |___| |___| |___| |___| |___| |___| |___| |__
Address ----------(Address A,B,C)--------------------------------------------------
(Channel number) ______
| |
ALE: __________________________| |_________________________________________
_______
| |
Start; _____________________________| |_____________________________________
__________________________________________ ______________________
| |
EOC: |________|
______________
| |
OE; ________________________________________________________| |____
Data: -----------------------------------------------------------(adc result)-----
***************************************************************************************************/
uint16_t ADC_GetAdcValue(uint8_t var_adcChannel_u8)
{
uint16_t adc_result;
/*
adc_A=((var_adcChannel_u8>>0) & 0x01); //Selectthe channel
adc_B=((var_adcChannel_u8>>1) & 0x01); //for which the conversion needs to be done
adc_C=((var_adcChannel_u8>>2) & 0x01);
*/
util_UpdateBit(adc_controlbus,adc_A,util_GetBitStatus(var_adcChannel_u8,0X00));
util_UpdateBit(adc_controlbus,adc_B,util_GetBitStatus(var_adcChannel_u8,0X01));
util_UpdateBit(adc_controlbus,adc_C,util_GetBitStatus(var_adcChannel_u8,0X02));
util_BitSet(adc_controlbus,adc_ALE); // Latch the address by making the ALE high.
DELAY_us(50);
util_BitSet(adc_controlbus,adc_Start); //Start the conversion after latching the channel address
DELAY_us(25);
util_BitClear(adc_controlbus,adc_ALE); //Pull ALE line to zero after starting the conversion.
DELAY_us(50);
util_BitClear(adc_controlbus,adc_Start);; //Pull Start line to zero after starting the conversion.
while(util_GetBitStatus(adc_controlbus,adc_EOC)==0); // Wait till the ADC conversion is completed,
// EOC will be pulled to HIGH by the hardware(ADC0809)
// once conversion is completed.
util_BitSet(adc_controlbus,adc_OE); //Make the Output Enable high
//to bring the ADC data to port pins
DELAY_us(25);
adc_result=adc_databus; //Read the ADC data from ADC bus
util_BitClear(adc_controlbus,adc_OE); //After reading the data, disable th ADC output line.
return(adc_result) ;
}
void UART_TxNumber(uint8_t var_uartChannel_u8, uint8_t var_numericSystem_u8, uint32_t var_number_u32, uint8_t var_numOfDigitsToTransmit_u8)
{
uint8_t i=0,a[10];
if(C_BINARY_U8 == var_numericSystem_u8)
{
while(var_numOfDigitsToTransmit_u8!=0)
{
/* Start Extracting the bits from the specified bit positions.
Get the Acsii values of the bits and transmit */
i = util_GetBitStatus(var_number_u32,(var_numOfDigitsToTransmit_u8-1));
UART_TxChar(var_uartChannel_u8,util_Dec2Ascii(i));
var_numOfDigitsToTransmit_u8--;
}
}
else if(var_number_u32==0)
{
/* If the number is zero then update the array with the same for transmitting */
for(i=0;((i<var_numOfDigitsToTransmit_u8) && (i<C_MaxDigitsToTransmit_U8)) ;i++)
UART_TxChar(var_uartChannel_u8,'0');
}
else
{
for(i=0;i<var_numOfDigitsToTransmit_u8;i++)
{
/* Continue extracting the digits from right side
till the Specified var_numOfDigitsToTransmit_u8 */
if(var_number_u32!=0)
{
/* Extract the digits from the number till it becomes zero.
First get the remainder and divide the number by 10 each time.
example for Decimal number:
If var_number_u32 = 123 then extracted remainder will be 3 and number will be 12.
The process continues till it becomes zero or max digits reached*/
a[i]=util_GetMod32(var_number_u32,var_numericSystem_u8);
var_number_u32=var_number_u32/var_numericSystem_u8;
}
else if( (var_numOfDigitsToTransmit_u8 == C_DefaultDigitsToTransmit_U8) ||
(var_numOfDigitsToTransmit_u8 > C_MaxDigitsToTransmit_U8))
{
/* Stop the iteration if the Max number of digits are reached or
the user expects exact(Default) digits in the number to be transmitted */
break;
}
else
{
/*In case user expects more digits to be transmitted than the actual digits in number,
then update the remaining digits with zero.
Ex: var_number_u32 is 123 and user wants five digits then 00123 has to be transmitted */
a[i]=0;
}
}
while(i)
{
/* Finally get the ascii values of the digits and transmit*/
UART_TxChar(var_uartChannel_u8,util_Hex2Ascii(a[i-1]));
i--;
}
}
}
void LCD_DisplayNumber(uint8_t v_numericSystem_u8, uint32_t v_number_u32, uint8_t v_numOfDigitsToDisplay_u8)
{
uint8_t i=0,a[10];
if(C_BINARY_U8 == v_numericSystem_u8)
{
while(v_numOfDigitsToDisplay_u8!=0)
{
/* Start Extracting the bits from the specified bit positions.
Get the Acsii values of the bits and display */
i = util_GetBitStatus(v_number_u32,(v_numOfDigitsToDisplay_u8-1));
LCD_DisplayChar(util_Dec2Ascii(i));
v_numOfDigitsToDisplay_u8--;
}
}
else if(v_number_u32==0)
{
/* If the number is zero then display Specified number of zeros*/
/*TODO: Display single zero or multiple. Currently single zero is displayed*/
for(i=0;((i<v_numOfDigitsToDisplay_u8) && (i<C_MaxDigitsToDisplay_U8));i++)
LCD_DisplayChar('0');
}
else
{
for(i=0;i<v_numOfDigitsToDisplay_u8;i++)
{
/* Continue extracting the digits from right side
till the Specified v_numOfDigitsToDisplay_u8 */
if(v_number_u32!=0)
{
/* Extract the digits from the number till it becomes zero.
First get the remainder and divide the number by TypeOfNum(10-Dec, 16-Hex) each time.
example for Decimal number:
If v_number_u32 = 123 then extracted remainder will be 3 and number will be 12.
The process continues till it becomes zero or max digits reached*/
a[i]=util_GetMod32(v_number_u32,v_numericSystem_u8);
v_number_u32=v_number_u32/v_numericSystem_u8;
}
else if( (v_numOfDigitsToDisplay_u8 == C_DisplayDefaultDigits_U8) ||
(v_numOfDigitsToDisplay_u8 > C_MaxDigitsToDisplay_U8))
{
/* Stop the iteration if the Max number of digits are reached or
the user expects exact(Default) digits in the number to be displayed */
break;
}
else
{
/* In case user expects more digits to be displayed than the actual digits in number,
then update the remaining digits with zero.
Ex: v_num_u32 is 123 and user wants five digits then 00123 has to be displayed */
a[i]=0;
}
}
while(i!=0)
{
/* Finally get the ascii values of the digits and display*/
LCD_DisplayChar(util_Hex2Ascii(a[i-1]));
i--;
}
}
}
