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Hi Shankariamma,
In the timer initialization function i.e void initTimer0(void) the PRESCALE value should be 15 and not 150 if you want delay in microseconds.
change the abovementioned line to T0PR = 15-1;
Check these calculations for more clarity reference ocrfreaks.com:
Prescale (TxPR)...
Trying to communicate with lpc2148 inbuilt i2c protocol(i2c0) to external adc chip (pcf8591 philips adc-dac chip) to read adc voltage from it.
But proteus simulation with lpc2138 is not responding to the code written.Being a newbie to i2c protocol specifically on LPC2148, can anyone guide me on...
Re: adc0804 & 0808 readings going 0 after half the total voltage read through i/p cha
The question is targetted more towards 0804 but the behaviour is same for both (ADC0804 and 0808).
Re: adc0804 & 0808 readings going 0 after half the total voltage read through i/p cha
@milan.rajak
Yes , in adc_init() the intr pin has been made input(intr = 1).
I agree that the data has to be read once the INTR pin goes low hence i have removed the INTR pin forceful pull-down(INTR = 0) in...
adc0804 & 0808 readings going 0 after half the total voltage read through i/p channel
Can someone explain why this strange behaviour is seen while interfacing adc0808 or adc0804 with at89s52 microcontroller.
Iam trying to read 5v connected to channel 0 of adc0808 , hence it should give 255...
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