Search found 42 matches

Thanks temtronic

The prolem has solved,

Because PC817 connect to Resistor 220 Ohm, therefore I have changed to 10K,
It's run.

Best regards

Dear Sir

I have a problem with output PWM PIC18F2480 (PIN RC2).
I want to use AD0 to output PWM CCP1 from 0-100%.

PWM Period = (PR2) + 1] • 4 • T OSC •(TMR2 Prescale Va ...

Thanks everybody in here.

- The problem is PIC18F2480 have Analog input PIN_B0, PIN_B1, therefore just config: setup_adc_ports(AN0_TO_AN2); the problem is solved.
- I have also modified ...

Dear Sir.

I want to test a simple command input(PIN_B1) from PIC18F2480, but I can not change the state input PIN_B1.

I have already configured fast_io(b), set_tris(0x03) // B0, B1 is input ...

Thanks Ttelmah in this forum.

For a long time, I known why the result from ADC returned not true.

The key is TI recommends always sending a START/SYNC command
immediately after the CM bit is se ...

Thanks Sir

I know my problem is convert ADC Pressure,

I go back to ADC pressure again. Because the temperature is true with temp[3] = MSB, temp[2] = , temp[1] = LSB, this result after convert t ...

Thanks for your response

- EPROM parameters are IEEEE
-ADC is signed int32
-When calculate ADC convert to float.

float Pressure(void)
{
float Pint1, Pint2, Pcom_fs, Pcomp;
f ...

Thanks for your response.

Next step is calculate press compensated.

The value adc pressure return press2 byte press
int32 p = make32(0,press

float Pressure(void)
{

float ...

Thanks Ttelmah very much.
After copy all parameters 61, 63, 65, 67 from eprom into register 0, 1,2,3 ADC
the MSB ADC press return a value non-zero, still using single mode in ADS220.

address 61 ...

Thanks for your response

After make a excel calculate i recognized the MSB data of press ADC = 0 will be not true in Pcom result.

All parameters for calculate P read from EPROM SPI mode 0

Off ...

Hi, after read AD1220 datasheet again, I know the time conversation is tclk * 204850 = 0.8 ms with clk =256khz.

But the adc press return press

void ReadADCTemperature()
{
ou ...

Thanks Sir

I will try to solve my problem

Thanks Sir

After checked with datasheet, the calculated temperature is true. I just read the positive temperature therefore don't need to process sign bit, the full function to calculate temperatu ...

case 1:

float Temperature(void)
{
int32 a;
a = make32(temp[3], temp[2], temp[1],temp[0]);
a>>=10;
//float b = f_IEEEtoPIC( a) ...

Thank Sir for Texas ADS1220 in this sensor.

The adc temperature read back, but i have a problem with calculate

temp
void ReadADCTemperature()
{
output_high(CS_EE); ...