Differences

This shows you the differences between two versions of the page.

--- pic32 [2026-03-01 06:18 UTC (3 months ago)] – v
+++ pic32 [2026-05-03 01:16 UTC (4 weeks ago)] (current) – Added serial parameters benjamin
@@ Line 5: / Line 5: @@
 ===== iMX to PIC comms =====
+The watchdog communicates on /dev/ttymxc2 at 115200 8n1
 Watchdog initialization and feeding: {{ :kibble.sal |}}
 Stopping the watchdog (with NxExe watchdog 0): {{ :euthasol.sal |}}
+Stopping is as simple as
+  echo -ne "\xBC\x01\0\x04\0\x04H@\x03\0\0" > /dev/ttymxc2
+Communication uses the same IPP protocol as [[cVEND]].
+==== IPP message types ====
+^ msgType ^ dir ^ name ^ description ^
+| 0x02 | -> | ValueRead | accepts a 2-byte key, returns a variable-length value |
+| 0x03 | <- | ValueReadReply | |
+| 0x04 | -> | ValueWrite | accepts a 2-byte key followed by a variable-length value, assigns value to key |
+| 0x05 | <- | ValueWriteReply | |
+| 0x0a | -> | | ''10000000000080'' reads external EEPROM, ''18000000000080'' reads internal EEPROM |
+| 0x0c | -> | | empty payload immediately powers the device off |
+| 0x0e | -> | | empty payload immediately powers the device off |
+| 0x12 | -> | SetLogLevel | ''0000'' enables some kind of logging behavior, ''8000'' disables it |
+-> - iMX to PIC\\
+<- - PIC to iMX
+Types 0x80-0xff mirror 0x00-0x7f, but with CRC32 enabled.
+[[nx]] strings also suggest the existence of:
+  * ValueAttribRead
+  * ValueAttribWrite
+  * DeviceRead (0x0a?)
+  * DeviceWrite
+  * DeviceIoCtl
+  * AppRequest
+==== Keys ====
+^ id ^ type ^ description ^
+| 0000 | u8 | |
+| 0001 | u8 | |
+| 0002 | u8 | |
+| 0003 | u8 | |
+| 0004 | u8 | |
+| 000a | u8 | |
+| 0100 | u8 | internal power button (0/1) |
+| 03e8 | u8 | |
+| 03e9 | u8 | |
+| 03ea | u8 | |
+| 03f0 | u8 | |
+| 03f3 | u8 | |
+| 03fb | u8 | ignition state (0/1) |
+| 0428 | u8 | |
+| 0429 | u8 | |
+| 042a | u8 | |
+| 042b | u8 | |
+| 042c | u8 | |
+| 0433 | u8 | |
+| 0434 | u8 | |
+| 0436 | u8 | |
+| 0437 | u8 | |
+| 0438 | u8 | |
+| 07d0 | u8 | |
+| 07d1 | u8 | |
+| 07d2 | u8 | |
+| 07d3 | u8 | |
+| 07d4 | u8 | |
+| 07d5 | u8 | |
+| 07d6 | u8 | |
+| 07d7 | u8 | |
+| 07d8 | u8 | |
+| 07d9 | u8 | |
+| 07da | u8 | |
+| 07db | u8 | |
+| 07dc | u8 | |
+| 07dd | u8 | |
+| 07de | u8 | |
+| 07df | u8 | |
+| 07e0 | u8 | |
+| 07e1 | u8 | |
+| 07e2 | u8 | |
+| 07e3 | u8 | |
+| 07e4 | u8 | |
+| 07e5 | u8 | |
+| 07e6 | u8 | |
+| 07e7 | u8 | |
+| 07e8 | u8 | |
+| 07e9 | u8 | |
+| 07ea | u8 | |
+| 07eb | u8 | |
+| 07ec | u8 | |
+| 07ed | u8 | |
+| 07ee | u8 | |
+| 07ef | u8 | |
+| 07f0 | u8 | |
+| 07f1 | u8 | |
+| 07f2 | u8 | |
+| 07f3 | u8 | |
+| 07f4 | u8 | |
+| 07f5 | u8 | |
+| 07f6 | u8 | |
+| 4000 | u16 | |
+| 4001 | u16 | |
+| 4002 | u16 | watchdog residual (seconds) |
+| 4003 | u16 | watchdog timeout (seconds), 0 to disable |
+| 4004 | u16 | boot watchdog timeout (seconds) |
+| 4005 | u16 | |
+| 400a | u16 | |
+| 400b | u16 | |
+| 400c | u16 | |
+| 400d | u16 | |
+| 400e | u16 | |
+| 400f | u16 | |
+| 4010 | u16 | |
+| 4011 | u16 | |
+| 4030 | u16 | |
+| 4031 | u16 | |
+| 4032 | u16 | |
+| 4033 | u16 | |
+| 4034 | u16 | |
+| 4035 | u16 | |
+| 4036 | u16 | |
+| 403d | u16 | |
+| 403e | u16 | |
+| 403f | u16 | |
+| 5000 | u16 | |
+| 5001 | u16 | |
+| 5002 | u16 | |
+| 5008 | u16 | |
+| 500b | u16 | ambient light sensor |
+| 5013 | u16 | |
+| 5040 | u16 | input voltage (mV) |
+| 5041 | u16 | |
+| 5042 | u16 | |
+| 5043 | u16 | |
+| 5044 | u16 | |
+| 504b | u16 | |
+| 504c | u16 | |
+| 504e | u16 | |
+| 504f | u16 | |
+| 5050 | u16 | |
+| 5100 | u16 | |
+| 5101 | u16 | |
+| 5102 | u16 | |
+| 5108 | u16 | |
+| 510b | u16 | |
+| 5113 | u16 | |
+| 5140 | u16 | |
+| 5141 | u16 | |
+| 5142 | u16 | |
+| 5143 | u16 | |
+| 5144 | u16 | |
+| 514b | u16 | |
+| 514c | u16 | |
+| 514e | u16 | |
+| 514f | u16 | |
+| 5150 | u16 | |
+| 5200 | u16 | |
+| 5201 | u16 | |
+| 5202 | u16 | |
+| 5208 | u16 | |
+| 520b | u16 | |
+| 5213 | u16 | |
+| 5240 | u16 | |
+| 5241 | u16 | |
+| 5242 | u16 | |
+| 5243 | u16 | |
+| 5244 | u16 | |
+| 524b | u16 | |
+| 524c | u16 | |
+| 524e | u16 | |
+| 524f | u16 | |
+| 5250 | u16 | |
+| 6100 | u16 | |
+| 6101 | u16 | |
+| 6102 | u16 | |
+| 8012 | u32 | |
+| 8020 | u32 | |
+| 8030 | u32 | |
+| 8100 | u32 | PwrOnTime |
+| 8102 | u32 | PwrOnCnt |
+| 8103 | u32 | StartCnt |
+| 8104 | u32 | StartIgnCnt |
+| 8105 | u32 | |
+| 8106 | u32 | |
+| 8107 | u32 | StartButtonCnt |
+| 8108 | u32 | StartUsbCnt |
+| 8109 | u32 | UsbConnectCnt |
+| 810a | u32 | ShutdownCnt |
+| 8110 | u32 | WdCnt |
+| 8111 | u32 | WdCpuCnt |
+| 8112 | u32 | WdCardCnt |
+| 8114 | u32 | |
+| 8115 | u32 | WdButtonCnt |
+| 8116 | u32 | |
+| 8117 | u32 | |
+| 8118 | u32 | |
+| 8119 | u32 | |
+| c000 | string | pic32 version |
+| c001 | string | bootloader version |
+| c010 | string | |
+| c011 | string | |
+| c0c0 | string | timer statistics |
+| d000 | string | |
+| d001 | string | |
+| d002 | string | |
+| d008 | string | |
+| d00b | string | |
+| d013 | string | |
+| d040 | string | |
+| d041 | string | |
+| d042 | string | |
+| d043 | string | |
+| d044 | string | |
+| d04b | string | |
+| d04c | string | |
+| d04e | string | |
+| d04f | string | |
+| d050 | string | |
+| d100 | string | |
+| d101 | string | |
+| d102 | string | |
+| d108 | string | |
+| d10b | string | |
+| d113 | string | |
+| d140 | string | |
+| d141 | string | |
+| d142 | string | |
+| d143 | string | |
+| d144 | string | |
+| d14b | string | |
+| d14c | string | |
+| d14e | string | |
+| d14f | string | |
+| d150 | string | |
+| d200 | string | |
+| d201 | string | |
+| d202 | string | |
+| d208 | string | |
+| d20b | string | |
+| d213 | string | |
+| d240 | string | |
+| d241 | string | |
+| d242 | string | |
+| d243 | string | |
+| d244 | string | |
+| d24b | string | |
+| d24c | string | |
+| d24e | string | |
+| d24f | string | |
+| d250 | string | |