aepko/Ardupilot2
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

added some notes on EEPROM speed

Browse Source
This commit is contained in:
Andrew Tridgell 2012-02-12 19:21:49 +11:00
parent c4bd17052e
commit 71175a9bb1
1 changed files with 10 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
Tools/CPUInfo/output.txt
View File

@ -39,3 +39,13 @@ idiv32 37.71 usec/call
memcpy128 56.76 usec/call
memset128 49.71 usec/call
delay(1) 1005.14 usec/call
Additional notes:
eeprom_read_byte: 2 usec/call
eeprom_write_byte: first call costs 5 usec, each subsequent byte
costs 3480 usec as it waits for the EEPROM to be
ready from the previous byte
pgm_read_byte: 0.5 usec per byte