在 Android 上写入 BLE gatt 特性 — 错误状态 255

Question

正在使用示例 kotlin 程序进行实验，尝试 read/write 通道为 0-7 的 BLE 设备

阅读时它给我这样的值：(0x06)

onCharacteristicRead(), status=0, value=[uuid='ba7e7814-5b67-43d3-bd80-e72cc83ae801', hexValue=[06]]

但是当我尝试写入相同的输出时，它给了我错误 GATT 255，超出范围：

CharacteristicWriteOperation{MAC='00:A0:50:E8:78:86', characteristic=[uuid='ba7e7814-5b67-43d3-bd80-e72cc83ae801', hexValue=[30, 36]]}

onCharacteristicWrite(), status=255, value=[uuid='ba7e7814-5b67-43d3-bd80-e72cc83ae801']

Answer 1

您阅读的内容：[0x06]

onCharacteristicRead(), status=0, value=[uuid='ba7e7814-5b67-43d3-bd80-e72cc83ae801', hexValue=[06]]

您写的内容：[0x30, 0x36]（可能对应于字符串“06”，因为 '0' 的 ASCII 十六进制值是 0x30，'6' 是 0x36)

CharacteristicWriteOperation{MAC='00:A0:50:E8:78:86', characteristic=[uuid='ba7e7814-5b67-43d3-bd80-e72cc83ae801', hexValue=[30, 36]]}

您可能想写回十六进制值 0x06，而不是字符串 "06"

Status 255 is GATT_OUT_OF_RANGE which means that the written value is outside of range accepted by your peripheral.

在 Android 上写入 BLE gatt 特性 — 错误状态 255

Write BLE gatt characteristic on Android — error status 255

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