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| author | Florian Heilmann <Florian.Heilmann@gmx.net> | 2018-08-23 01:17:43 +0200 |
|---|---|---|
| committer | KevinOConnor <kevin@koconnor.net> | 2018-08-22 19:17:43 -0400 |
| commit | a8a912fbb5ddef0b36f38656fb5d0268b75f595c (patch) | |
| tree | fb66f7a81dc6341cf2a1a3b451373aca3597ee97 | |
| parent | e94f3b78271cdff6889628a76951eef9f3c8cecf (diff) | |
| download | kutter-a8a912fbb5ddef0b36f38656fb5d0268b75f595c.tar.gz kutter-a8a912fbb5ddef0b36f38656fb5d0268b75f595c.tar.xz kutter-a8a912fbb5ddef0b36f38656fb5d0268b75f595c.zip | |
docs: Update sam4e8e docs and benchmarks (#562)
Signed-off-by: Florian Heilmann <Florian.Heilmann@gmx.net>
| -rwxr-xr-x[-rw-r--r--] | docs/Bootloaders.md | 18 | ||||
| -rwxr-xr-x[-rw-r--r--] | docs/Debugging.md | 17 | ||||
| -rwxr-xr-x[-rw-r--r--] | docs/Features.md | 2 |
3 files changed, 36 insertions, 1 deletions
diff --git a/docs/Bootloaders.md b/docs/Bootloaders.md index c1528c32..87ce0b00 100644..100755 --- a/docs/Bootloaders.md +++ b/docs/Bootloaders.md @@ -144,6 +144,24 @@ stty -F /dev/ttyACM0 1200 bossac -i -p ttyACM0 -R -e -w -v -b out/klipper.bin ``` +SAM4 micro-controllers (Duet Wifi) +==================================== + +It is not common to use a bootloader with the SAM4 mcu. The chip +itself has a ROM that allows the flash to be programmed from 3.3V +serial port or from USB. + +To enable the ROM, the "erase" pin is held high during a reset, which +erases the flash contents, and causes the ROM to run. + +The code at https://github.com/shumatech/BOSSA can be used to program +the SAM4. It is necessary to use version `1.8.0` or higher. + +To flash an application use something like: +``` +bossac --port=/dev/ttyACM0 -b -U -e -w -v -R out/klipper.bin +``` + SAMD21 micro-controllers (Arduino Zero) ======================================= diff --git a/docs/Debugging.md b/docs/Debugging.md index cc68d526..054a687e 100644..100755 --- a/docs/Debugging.md +++ b/docs/Debugging.md @@ -288,6 +288,23 @@ single stepper result is `SET ticks 249`, the best dual stepper result is `SET ticks 220`, and the best three stepper result is `SET ticks 374`. +### Duet Wifi step rate benchmark ### + +The following configuration sequence is used on the Duet Wifi: +``` +allocate_oids count=3 +config_stepper oid=0 step_pin=PD6 dir_pin=PD11 min_stop_interval=0 invert_step=0 +config_stepper oid=1 step_pin=PD7 dir_pin=PD12 min_stop_interval=0 invert_step=0 +config_stepper oid=2 step_pin=PD8 dir_pin=PD13 min_stop_interval=0 invert_step=0 +finalize_config crc=0 +``` + +The test was last run on commit `e94f3b7` with gcc version +`arm-none-eabi-gcc (15:5.4.1+svn241155-1) 5.4.1 20160919`. The best +single stepper result is `SET ticks 325`, the best dual stepper result +is `SET ticks 283`, and the best three stepper result is `SET ticks +379`. + ### Beaglebone PRU step rate benchmark ### The following configuration sequence is used on the PRU: diff --git a/docs/Features.md b/docs/Features.md index 01152373..bf4d9319 100644..100755 --- a/docs/Features.md +++ b/docs/Features.md @@ -98,7 +98,7 @@ represent total number of steps per second on the micro-controller. | Arduino Due (ARM SAM3X8E) | 382K | 337K | | Smoothieboard (ARM LPC1768) | 385K | 385K | | Smoothieboard (ARM LPC1769) | 462K | 462K | -| Duet Wifi/Eth (ARM SAM4E8E) | 545K | 545K | +| Duet Wifi/Eth (ARM SAM4E8E) | 475K | 475K | | Beaglebone PRU | 689K | 689K | On AVR platforms, the highest achievable step rate is with just one |