STM32F107VC/Using ADC

Literature

• Analog-digitalkonvertering (e-books.dk)
• STM32 ADC modes. (ST Application note AN3116)

Software example

• ad2.zip (Example using RTX task triggering ADC conversion 100 times a second)
• ad2timer.zip (Same example as above. Just using timer 2 to trig ADC conversion 100 times a second)

LDR - Light Dependent Resistor

• PGM5526 LDR Datasheet (Loads PDF)

The LDR is connected between GPIO port C bit 0 and GND. A 10K pull-up resistor to 3.3V also connected to GPIO port C bit 0

Sample output from COM port

Baudrate: 9600

POT = 3.292V| LDR = 0.80V | DEG = 26.7C| Vrefint = 1.2075V
POT = 3.292V| LDR = 0.80V | DEG = 26.6C| Vrefint = 1.2076V
POT = 3.292V| LDR = 0.80V | DEG = 26.8C| Vrefint = 1.2071V
POT = 3.294V| LDR = 0.80V | DEG = 26.6C| Vrefint = 1.2075V
POT = 3.293V| LDR = 0.80V | DEG = 26.6C| Vrefint = 1.2074V