how to read a data array from EEPROM AT24C256B
I have configured my ADC to convert an analog value every 100 milli seconds using timer 2 , I could able to write data to EEPROM but while reading it back i could only see 20 variables in array.
As below mentioned in code, I could able to switch on my LED .
But my question is why I could not able to display/read all the 50 variables in my array in my watch windows of keil MDK?
However, i can only read till 20 variables (data_read[20])!
what could be the possible reasons?? I couldnt able to comprehend. is it because of the capabilities of Keil / ST link V2 debugging or because of the functions i am using to read EEPROM.
As per the below code and output i.e, I could set( switch on My led) I am with a hypothesis that, data is written into EEPROM , I am only facing problem of reading all the 50 variables in array because of debugging capabilities of software and hardware ? Am I correct or wrong? Could some one please validate?
code ( I have kept only the essential lines):
uint8_t data_read[50], data_write[50];
uint8_t adc_value[60],inc=0;
while (1)
{
/* USER CODE END WHILE */
if(inc==50)
{
for(int i=0;i<=51;i++)
{
data_write[i]=adc_value[i];
}
HAL_I2C_Mem_Write(&hi2c1,0xA0, 0x1AAA,I2C_MEMADD_SIZE_16BIT,data_write,50,HAL_MAX_DELAY);
while(HAL_I2C_IsDeviceReady(&hi2c1, 0xA0, 1, HAL_MAX_DELAY) != HAL_OK);
if((HAL_I2C_Mem_Read(&hi2c1,0xA1, 0x1AAA,I2C_MEMADD_SIZE_16BIT,data_read, 50, HAL_MAX_DELAY))== HAL_OK)
{
HAL_GPIO_WritePin(GPIOC,GPIO_PIN_9,GPIO_PIN_SET);
}
}
void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(hadc);
adc_value[inc]=HAL_ADC_GetValue(hadc);
inc++;
if(inc==70)
{
HAL_ADC_Stop_IT(hadc);
}