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docs: Update sam4e8e docs and benchmarks (#562) 

Signed-off-by: Florian Heilmann <Florian.Heilmann@gmx.net>
This commit is contained in:
Florian Heilmann 2018-08-23 01:17:43 +02:00 committed by KevinOConnor
parent e94f3b7827
commit a8a912fbb5
3 changed files with 36 additions and 1 deletions
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18
docs/Bootloaders.md Normal file → Executable file
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@ -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)
=======================================

17
docs/Debugging.md Normal file → Executable file
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@ -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:

2
docs/Features.md Normal file → Executable file
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@ -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