kopia lustrzana https://github.com/DL7AD/pecanpico9
c745ef50c9
- Removed secondary decoder - Updated image encoding at tracker firmware - Updated image encoding at decoder software - Implemented more sophisticated website - Added error transmission - Adjusted MCU speed to the highest rate - Implemented configuration that allows GPS to be switched on permanently at a certain battery voltage - Decreased humidity sensor accuray - Imcreased voltage measurement accuracy - Added temperature measurements of STM32 and Si4464 to TrackPoint struct - Added light intensity measurements of OV5640 to TrackPoint struct - Cleaned up (removed unused things) - Implemented more accurate measurements for PAC1720 - Implemented failure detection for PAC1720 and ublox chips - Fixed bug in Si4464 driver which used power when switched off - Added more data readouts for GPS receiver (pDOP, gpsFixOK) - Changed way of determination if GPS fix is good - Implemented temperature measurement of STM32 - Added error detection of I2C bus - Removed Milliseconds from ptime_t - Fixed bug in timestamp conversion - Removed RBAT measurement implementation (it was very inaccurate) - Avoid radio being switched off when next packet is waiting for being transmitted - Tidied up tracking manager |
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| README | ||
| rs8.c | ||
| rs8.h | ||
| ssdv.c | ||
| ssdv.h | ||
README
SSDV - simple command line app for encoding / decoding SSDV image data Created by Philip Heron <phil@sanslogic.co.uk> http://www.sanslogic.co.uk/ssdv/ A robust packetised version of the JPEG image format. Uses the Reed-Solomon codec written by Phil Karn, KA9Q. ENCODING $ ssdv -e -c TEST01 -i ID input.jpeg output.bin This encodes the 'input.jpeg' image file into SSDV packets stored in the 'output.bin' file. TEST01 (the callsign, an alphanumeric string up to 6 characters) and ID (a number from 0-255) are encoded into the header of each packet. The ID should be changed for each new image transmitted to allow the decoder to identify when a new image begins. The output file contains a series of SSDV packets, each packet always being 256 bytes in length. Additional data may be transmitted between each packet, the decoder will ignore this. DECODING $ ssdv -d input.bin output.jpeg This decodes a file 'input.bin' containing a series of SSDV packets into the JPEG file 'output.jpeg'. LIMITATIONS Only JPEG files are supported, with the following limitations: - YUV/YCbCr colour format - Width and height must be a multiple of 16 (up to a resolution of 4080 x 4080) - Baseline DCT only - The total number of MCU blocks must not exceed 65535 INSTALLING make TODO * Allow the decoder to handle multiple images in the input stream. * Experiment with adaptive or multiple huffman tables. * Quality setting (4 bit / 16 quality levels).