Hi,
i use a stm8s003 and SPL for programming. I am not a profi programmer.
My goal is measure an Analog signal with stm8s and reading this with Python command from a Raspberry Pi.
Ok, i use STM example Program I2c slave. I can read some registers from stm8s with a little python code. But i dont now, which registers, that i read.
Has i2c a Data register?
Or can some body give me a little example like this: Read the value of int x over i2c bus
Below is the codes
I2C slave code:
int x=12; //i want read this value!!!!!
void main(void)
{
/* system_clock / 1 */
CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV1);
I2C_DeInit();
/* Initialize I2C peripheral */
#ifdef I2C_slave_7Bits_Address
I2C_Init(100000, 0x30, I2C_DUTYCYCLE_2, I2C_ACK_CURR, I2C_ADDMODE_7BIT, 16);
#else
I2C_Init(100000, SLAVE_ADDRESS, I2C_DUTYCYCLE_2, I2C_ACK_CURR,I2C_ADDMODE_10BIT, 16);
#endif
/* Enable Error Interrupt*/
I2C_ITConfig((I2C_IT_TypeDef)(I2C_IT_ERR | I2C_IT_EVT | I2C_IT_BUF), ENABLE);
/* Enable general interrupts */
enableInterrupts();
/*Main Loop */
while (1)
{
/* infinite loop */
}
}
PYTHON Code:
from smbus2 import SMBus
with SMBus(1) as bus:
b = bus.read_byte_data(0x18, 0) #this data adress, how it must to be
print(b)
