Posted on December 30, 2011 at 16:00
Hi there !
I am a
newbie
in ST microcontroller.
1) Tobeginning, I bought :
* A
http://www.st.com/internet/evalboard/product/251jsp
(with a
stm8l101K3 MCU)
* A
http://www.raisonance.com/tzr/scripts/resizer.php?filename=T018/image/10/a5/4cn9ziz4bnx6&mime=image/jpeg&geometry=297x>;
kit (with the
Ride7developmentenvironment)
2)
So, my issue:
programming a hello world soft
for my MCU.
In other words: To make a short software to
detect an analog input DC voltage
(3.3V DC on comparative inputs )
3) What I have already done:
#include ''stm8l10x.h''
#define MyGPIO (GPIOB)
#define MyPin(GPIO_Pin_All)
void
main(
void
){
uint8_t C=0;
uint8_t My;
while
(1) {
GPIO_DeInit(MyGPIO);
GPIO_Init(MyGPIO, MyPin, GPIO_Mode_In_FL_No_IT);
My = GPIO_ReadInputDataBit(MyGPIO, MyPin);
C++;
}
}
But : When I run this example, and use a strap to powereed with a 3.3 V DC inputs of the MCU, nothings occurs... Just the unint8_t C counter works.
Anybody can explain-me how to develop a simple soft to detect the input voltage in an analog input pin of the MCU ?
NB: Yes, I havealready downloaded some example in the internet (st website and ride example). The main issue for myself is tounderstandhow a microcontroller works, I2C, SPI, comparator etc. I have just one experience with MCU (mbed NXP product).
Regards,
GM
