This is firmware to drive my LPC812/RFM69HW and LPC812/RFM9x radio modem.
The LPC812 with this firmware acts as a radio operating system, providing a simplified interface between the RFMxx module and the host application.
Built with LPCxpresso v7.3.0 (free IDE from NXP).
PCB project is here: https://github.com/jdesbonnet/RFMxx_LPC812_PCB
Documentation on the UART protocol is here: https://docs.google.com/document/d/1FBZINVb_g0gnWlEkQYNBEHTwiyHNY0fn5J37EqBPyog/edit?usp=sharing
Also included is a web test user interface. This interfaces to modem board using WebSockets and a UART to WebSockets bridge. See https://github.com/jdesbonnet/WebSocketUARTBridge.
Joe Desbonnet, jdesbonnet@gmail.com 12 Oct 2016
- LPCopen version now sleeping with appro 2.5uA current (bug in 0.7.7 due to IOCON clock being off).
- Fix ABPM I2C snoop bug (i2c_ptr wasn't being reset).
- TODO: Recent changes seems to have caused deep sleep to use excessive current. Seems related to status LED.
- ABPM: sense start/stop button.
- Integrate LPCOpen library.
- Ambulatory Blood Pressure Monitor module.
- Ignore UART commands starting with the comment character (';')
- Change poll_interval time unit from seconds to 10 seconds to facilitate sleep interals up to 2550 seconds.
- Workaround for Issue #13: first iteration of low power mode does not go into proper low power mode (consumes >1mA). Solution is to make first iteration very short. Root cause still unknown.
- RFM68 board sleep current now down to 2.6µA due to conditioning of MCU to RFM reset pin.
- Support for RFM98 and RFM69
- 3µA sleep current achieved with RFM98
- 40µA sleep current achieved with RFM69
- Print CRC status with FRAME debug message
- Low battery modes (low and minimum).
- Fixes to OTA firmware code.
- Over-the-air firmware upgrade capability
- Much improved algorithm for detecting for replys after transmitting a packet. Listen period (and consequently power consuption) has been greatly reduced.
- Parameter mode to enable/disable DS19B20 temperature sampling.
- New remote firmware version query
- New remote MCU ID query
- Fix parameter block save when code compiled with optimization.
- Better RSSI measurement of received packet (measured before transferring frame to MCU)
- Implement ACK mechanism (MSB of packet type is a ACK request field).
- MCU memory read working
- Minor fixes.
- DS18B20 temperature sensor optional feature on PIO0_14.
- Fix bug where S lat and W longitude were not being reported as negative.
- RFM69 register write command can now take multiple value params. Each param written to successive register location. This facilitates issuing remote commands to change parameters that span more than one byte (eg radio bps)
- Add 'E' commend to en/disable echo of NMEA from GPS UART port to main UART port.
- Add GPS fix type and HDOP to 'g' message
- Support GPS module on second LPC812 UART (USART1). GPS UART TXD to pin 8 (PIO0_11). Reads NMEA sentences from the GPS and echos to the main API UART (USART0).
- Fix MCU unique ID retrieval bug
- Use MCU unique ID to implement a hack to fix one faulty PCB board (will be removed later at some point)
- Use MCU unique ID to assign node addresses from hard-coded table (can be over ridden with N command)
- Supports saving settings in flash memory
- Start to remove LPC810 legacy.
- Display config at boot time
- Display self-test status at boot time
- WDT timer set command working
- MCU Unique ID working properly
- Read MCU unique ID to auto implement V1B PCB hack
Units can be programmed through SWD or UART.
Connect to UART with terminal emulator on programming header at 115200 bps. Hit RETURN a few times to wake and enter 'O' command to enter bootloader mode. Then disconnect terminal emulator and use ./scripts/flash.sh script to upload new firmware.