Chunks not working on ESP32 about adafruit_busio HOT 10 CLOSED

erm, should probably pass stop thru there yeah?

from adafruit_busio.

It's passing through to the actual read start here:

But seems to be more fundamentally broken. Better example. Using a Feather ESP32. Nothing fancy, just try a read of 32 bytes:

#include <Wire.h>

#define WIRE Wire
#define I2C_ADDRESS (0x69)
#define READ_SIZE (32)

void setup() {
  Serial.begin(9600);
  while(!Serial);

  uint8_t buffer[READ_SIZE];
  
  WIRE.begin();
  WIRE.requestFrom(I2C_ADDRESS, 32, true);
  uint32_t count = 0;
  while (WIRE.available() and count < READ_SIZE) {
    buffer[count++] = WIRE.read();
  }
}

void loop() {
}

Generates expected traffic:

Change:

  WIRE.requestFrom(I2C_ADDRESS, 32, true);

to:

  WIRE.requestFrom(I2C_ADDRESS, 32, false);

and nothing happens on the bus.

Above test done with ESP32 BSP 2.0.0

from adafruit_busio.

try using something else, esp 2.0.0 broke a ton of stuff

from adafruit_busio.

Just to document behavior on a different platform - Qt Py M0

stop = true

stop = false

from adafruit_busio.

k, looks right to me, there's a stop in the first one, none in the second

from adafruit_busio.

Yep. Just documenting expected behavior. Qt Py works as expected.

Just tried with ESP32 BSP 1.0.6 and same results as with BSP 2.0.0.

from adafruit_busio.

yah ok try
espressif/arduino-esp32#4729 (comment)

from adafruit_busio.

hey! i know that pr :)
espressif/arduino-esp32#5470 (comment)

it does something different, but not the expected. basically same behavior either way.

stop = true

stop = false

from adafruit_busio.

ok please reply to that PR with the deets of what isnt workin

from adafruit_busio.

Closing. For now at least. The base issue for this is in the ESP32 BSP and, per comment here:
espressif/arduino-esp32#5702 (comment)
can not be supported for ESP32.

from adafruit_busio.