GPRS_C_SDK
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Ai-Thinker-Open
Full project using the A9G - mail notifier (not an issue, but could help with project design)
This isn't an issue, but it could help people with their firmware and hardware designs for the A9/A9G. I've made a mail notifier using the A9G that sends JSON data to a web server when triggered. It also has a BME280 which communicates with the module via I2C, uses UART to communicate with an ATtiny402 microcontroller and can last for around 4-5 years on a single charge of a 10440 lithium battery (~320mAh). It also has a GPS tracker mode, and has hardware for controlling power to an active GPS antenna.
https://github.com/zkemble/MailboxNotifier
https://blog.zakkemble.net/remote-mail-notifier-and-gps-tracker/
this looks great. when you were using the I2C from the A9G did you have to send all data i byte at a time or could you send through an array of items...
I'm trying to use I2C to communicate to a RTC module and althoguh i can request data i cannot set the current datetime on it
@medida I used I2C_Transmit() and I2C_Receive() to transfer multiple bytes at a time, see https://github.com/zkemble/MailboxNotifier/blob/master/firmware/a9g/src/bme280.c
@zkemble thanks - the I2C Transmit is much better code than the demo code from Ai-Thinker.. Not only was my code not functioning fully - a connection on my breadboard was faulty :(
Got I2C working thanks to @zkemble but it took me to long to learn how to use the API's. Loaded the AT firmware and hooked up a ATMega328 (TQFP body). Now after a few hours programming I have low power mode (0,22uA), triggers, SMS, RTC and store settings into EEPROM. I'm happy now :)
Sorry for sending the code @Pasboe been busy busy week.
So are you using an atmega to control the rtc which then wakes the pudding?
@zkemble Do you have a simple code about connect and get temperature data from the Adafruit_MLX90614 temperature sensor with the A9G development board Can you help me please?
