STM8S-Discovery I2C problems

u23 · ‎2017-01-12

Posted on January 12, 2017 at 15:39

I have the problem with I2C comunication.

I programmed two STM8S-Discovery with example firmware available in C:\Users\u.iaquinta\Downloads\en.stsw-stm8069\STM8S_StdPeriph_Lib\Project\STM8S_StdPeriph_Examples\I2C\I2C_TwoBoards\I2C_DataExchange

One discovery is master and the second discovery is slave.

Rp1 and Rp2 is 10 K.

The interrupt I2C not start.

The master firmware is:

void main()

{

/* system_clock / 1 */

CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV1);

/* I2C Initialize */

I2C_Init(I2C_SPEED, 0xA0, I2C_DUTYCYCLE_2, I2C_ACK_CURR, I2C_ADDMODE_7BIT, 16);

/* Enable Buffer and Event Interrupt*/

I2C_ITConfig((I2C_IT_TypeDef)(I2C_IT_EVT | I2C_IT_BUF) , ENABLE);

enableInterrupts();

.......

........

}

Any idea?

Thanks

u23 · ‎2017-01-18

Posted on January 18, 2017 at 10:55

I attached the project solution.

In the master folder there is the firmware for master device, and in the slave folder there is the firmware for slave device.

Push the button on the STM8S-Discovery master and wait until the LED1 blinks, else there is the comunication problem.

________________

Attachments :

STM8S003_I2C_Example.rar : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006HyzO&d=%2Fa%2F0X0000000bEy%2FEmklgAGT_WIePAalz_T8a35Rj4B4w31sa3qCJ54xkZM&asPdf=false