iwatake2222 / digitalcamera_stm32 Goto Github PK

When I was studying your project,encountered a problem that I didn't quite understand.

This is log:
[LV_CTRL:141] input: 1 0
[LV_CTRL:319] Single Capture Start
[LV_CTRL:326] create IMG005.JPG
Output file write error --- out of disk space?
Improper call to JPEG library in state 0

I hope to receive your reply.
Thank you!
@iwatake2222

I need to capture the image and send it to the server with the sim800l gsm module. I can handle sim800l, but How can I capture images with a camera and in what way should I send them?

What is the purpose of the condition in do-while loop (ret != HAL_OK && 0),
it seems loop continue only 1 time.

I'm facing the same issue as described here. However, in my case, both the HAL_I2C_Mem_Write and HAL_I2C_Master_Transmit are failing while reaching the I2C_WaitOnMasterAddressFlagUntilTimeout One thing to note here is that I'm not getting a timeout failure, rather a acknowledge failure in the below snippet:

while (__HAL_I2C_GET_FLAG(hi2c, Flag) == RESET)
  {
    if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) == SET) <--- Fulfills this if condition
    {
      /* Generate Stop */
      SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP);

      /* Clear AF Flag */
      __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);

      hi2c->PreviousState       = I2C_STATE_NONE;
      hi2c->State               = HAL_I2C_STATE_READY;
      hi2c->Mode                = HAL_I2C_MODE_NONE;
      hi2c->ErrorCode           |= HAL_I2C_ERROR_AF;

      /* Process Unlocked */
      __HAL_UNLOCK(hi2c);

      return HAL_ERROR;  <----- Fails here
    }
....
}

Any help regarding the same will be very appreciated.

Call stack goes:
ov7670_init
ov7670_write
HAL_I2C_Mem_Write
I2C_RequestMemoryWrite
I2C_WaitOnMasterAddressFlagUntilTimeout <-- fails with timeout

Logic analyser says there is a NACK instead of ACK (as expected) but how do I ignore this condition? Only the address part of the transaction is completed.