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hw40_d52a.c [2018/07/11 08:26] (current)
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|+||These are implementation notes for hw40_D52A.c.\\ \\ Hw40_D52A.c version 1.1 is derived from Hw40_D51.c and demonstrates sampling the accelerometer, returning the data within the ID field. It's the equivalent of the "Rohit accel in ID" application for the new hardware.\\ \\ Hw40_D52A.c version 1.2 improved the range of version 1, upping the "cold start" range from 14.5 inches to 31 inches. It also fixes a race condition in the sensor sampling code that could sometimes cause the device to stop responding.\\ \\ The plan is to merge this code into the Hw40_D51.c version 1.2 release, with its accel sampling functionality accessible via a #define. But if you need this functionality now and Hw40_D51.c version 1.2 isn't out yet, use this code instead.\\ \\ **Firmware status**\\ |
|+||| Fw src\\ | WISP hw\\ | Readers\\ | Functionality\\ | RFID protocol\\ | Modulation\\ | Range (cold start)\\ | comments\\ | known issues\\ ||
|+||| hw40_D52A.c - v. 1.2\\ | 4.0DL\\ | Impinj 3.0.2\\ | query-ack-accel sensor\\ | gen2\\ | Miller-4\\ | 31"\\ | tested on #4; fix for range + accel sampling lockup bug\\ | \\ ||
|+||| hw40_D52A.c - v. 1.1\\ | 4.0DL\\ | Impinj 3.0.2\\ | query-ack-accel sensor\\ | gen2\\ | Miller-4\\ | 14.5"\\ | wisp #4 has broken X axis; tested on wisp #1 (has 3v sv)\\ | poor range\\ ||