# stm32_bootloader

**Repository Path**: microroad/stm32_bootloader

## Basic Information

- **Project Name**: stm32_bootloader
- **Description**: STM32 bootloader driver via MQTT , JSON , SMING 
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2019-10-12
- **Last Updated**: 2020-12-19

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# stm32_bootloader
STM32 bootloader driver via MQTT , JSON , SMING 

topics are structured like this
<prefix>/stm32/in/<topic> : to send something to driver, who is sucbsribed to <prefix>/stm32/in/#
Topics
- request : JSON structure for incoming request { "cmd" : string, "id":number ,"data":string base64 encoded }
the data is a strean of byte codes steering the driver
  *X_RESET : toggle reset pin and send SYNC byte to stm32 , more details see STM32 bootloader protocol
  *X_WAIT_ACK : wait 10 msec on an ACK , return error if failed
  *X_SEND <count> : send count+1 bytes
  *X_BOOT0 <high/low> : set boot pin 
  *X_RECV_VAR : receive variable number of bytes
  *X_RECV <count> : receive count+1 bytes

<prefix>/stm32/<topic> : topics to which the device/driver is publishing data
Topics :
log : log output of device
reply : JSON object containing result data and error code