Hi, I am developing an I2C Bootloader, and I am using Microchip/Atmel Studio. I want to use the i2c slave async driver, so the whole callback implementation is ready to use.
The Hardware I am using is a SAMD21G18A MCU on an Arduino MKR ZERO Board.
My question is:
Is there a flag or some simple way to check if the slave device is receiving messages? I want to know if the Master/Primary is done sending data to the Slave/Secondary.
There is the Function "i2c_s_async_get_status" but after some reading my guess is, that this returns the device status and not the state of the Bus.
I hope that this minimal code segment can help in understanding my problem.
#include <atmel_start.h>
#include "driver_examples.h"
/*Global Var*/
static struct io_descriptor *io;
/*Functions*/
static void i2c_startmsg(const struct i2c_s_async_descriptor *const descr){
uint8_t c;
io_read(io, &c, 1);
}
void i2c_setup(void){
i2c_s_async_get_io_descriptor(&I2C_0, &io);
i2c_s_async_register_callback(&I2C_0, I2C_S_RX_COMPLETE, i2c_startmsg);
i2c_s_async_enable(&I2C_0);
}
int main(void)
{
/* Initializes MCU, drivers and middleware */
atmel_start_init();
i2c_setup();
while (1) {
gpio_toggle_pin_level(LED_BUILTIN);
delay_ms(1000);
if( HERE SOME CONDITION TO CHECK BUS STATUS ){
}
}
}I am a new player in programming the big boy MCUs, so please be kind and imply that there can be fundamental flaws in my approach.
Thank you in advance.
