hi Ole BAUCK, my slave device is STPM33 ENERGY METER using this device we can calculate vrms,irms,real power,reactive power,energy and many more.. that device is not having comman address. we can use address from 00-8A. to read active power address is 0x5c.i.e my slave address. i added my complete code please do check and help me. MAIN CODE
int main(void)
{
LEDS_CONFIGURE(LEDS_MASK);
LEDS_OFF(LEDS_MASK);
uint32_t err_code;
const app_uart_comm_params_t comm_params =
{
RX_PIN_NUMBER,
TX_PIN_NUMBER,
RTS_PIN_NUMBER,
CTS_PIN_NUMBER,
APP_UART_FLOW_CONTROL_ENABLED,
false,
UART_BAUDRATE_BAUDRATE_Baud9600
};
APP_UART_FIFO_INIT(&comm_params,
UART_RX_BUF_SIZE,
UART_TX_BUF_SIZE,
uart_error_handle,
APP_IRQ_PRIORITY_LOW,
err_code);
printf("\n\rStart: \n\r");
uint8_t st;
get: while(app_uart_get(&st)!=NRF_SUCCESS);// to receive char ,if 's' start the transmission
if(st=='s')
{
while(1)
{
uint8_t data=0x5c; //slave address
uint8_t ch;
static int i=0;
while(app_uart_put(data)!=NRF_SUCCESS);//to transmit slave address
printf("\r\n");
while(1)
{
char arr[50];
while(app_uart_get(&ch));// to receive power values
arr[i++]=ch;//storing into a buffer
if((int)ch==13)
{
LEDS_ON(LEDS_MASK);
printf("\r\nstring=%s\r\n",arr);//to print the received data
}
}
}
}//to close if
else goto get;
}//to close main
i have attached STPM33 data sheet also in my previous post . please help me. Thanks in advance
