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EEL CPU A32 01

Page history last edited by Noah Vawter 5 years, 7 months ago

Back to MarkII

MarkI Synthesizer Module

 

Software

 

Hardware Platform

 

Python Oscilloscope

from SoftOscilloscope import SerialPlot
plot = SerialPlot('/dev/ttyUSB0',921600)
plot.start()

 

Direct Serial Console

  • Putty, /dev/ttyUSB0, 921600 baud
  • Cygwin commands:   

cat < /dev/ttyS2
cat < /dev/ttyS2 > trap_log.csv
stty -F /dev/ttyS2 -a

screen /dev/ttyS1 1000000

tee </dev/ttyS3 serial-log.txt

  • Minicom, Serial Terminal for Ubuntu
  • Teraterm Home, Download
  • gtkterm for Ubuntu
  • Default pins on Nucleo STM327476RG for serial console:
    • This actually works
      • STLink board, RX, green, FTDI-232R, yellow, pin 5
      • STLink board, RX, blue, FTDI-232R, yellow, pin 4
    • Should be these, but had problems!
      • PA_2, D1, Serial2_TX  = UART_TX, CN10 "TX", green, 232R pin 5, Yellow, RXD
      • PA_3 = UART_RX, CN10 "RX", blue, 232R pin 4, Orange, TXD
      • GND  = GND, ?, ?, 232R pin 1, GND

 

GPIO-controlled Amplifier     Current Sensors     Voltage Sensors     Keyboard

 

GPIO-controlled Amplifier/Speaker, AMP-HB-01

Instance Name
 Chip Pin
Board Label
Data Type
Purpose
AMP1_A
PA_10
D2
DigitalOut
direction 1
AMP1_B
PB_3
D3
DigitalOut
direction 2
PWM_OUT
PD_7
D7
PwmOut     
PWM out

 

 

Current sensors

Instance Name
 Chip Pin
Board Label
Color
 Purpose
meas_curr[ 0 ]
PA_0
A0
Black
Current Sense 1
meas_curr[ 1 ]
PA_1
A1
White
Current Sense 2
meas_curr[ 2 ] PA_4
A2
Blue
Current Sense 3
        Current Sense 4

 

 

Voltage sensors

Instance Name
 Chip Pin
Board Label
Data Type
Purpose
  PB_0
A3
Voltage Sense 1
Voltage across capacitor storage

 

Keyboard, KEY-CHROM-01

Instance Name
 Chip Pin
Board Label
Data Type
Purpose
   
    D8
   
    
    D9
       
    D10
       
    D11
       

 

Onboard voltage regulator, LD1117

 

Voltage Sense 2

Voltage Sense 3

Voltage Sense 4

 

Inputs, Control Voltages

Control Voltage 1

Control Voltage 2

Control Voltage 3

Control Voltage 4

 

 

Notes on PWM:

 

  • For PWM-controlled speaker:

 

26.3.13 Combined PWM mode

Combined PWM mode allows two edge or cent

er-aligned PWM signals to be generated with

programmable delay and phase shift between re

spective pulses. While the frequency is

determined by the value of the TIMx_ARR regi

ster, the duty cycle and delay are determined

by the two TIMx_CCRx registers. The resulti

ng signals, OCxREFC, are made of an OR or

AND logical combination of two reference PWMs:

 

 

Manual section 26.3.15 

Complementary outputs and dead-time insertion

The advanced-control timers (TIM1/TIM8)

can output two complementary signals and

manage the switching-off and the switching-on instants of the outputs.

 

26.3.12 Asymmetric PWM mode

Asymmetric mode allows two center-aligned PWM signals to be generated with a

programmable phase shift. While the frequency is determined by the value of the

TIMx_ARR register, the duty cycle and the phase-shift are determined by a pair of

TIMx_CCRx register. One register controls the PWM during up-counting, the

second during down counting, so that PWM is adjusted every half PWM cycle:

–

OC1REFC (or OC2REFC) is contro

lled by TIMx_CCR1 and TIMx_CCR2

–

OC3REFC (or OC4REFC) is contro

lled by TIMx_CCR3 and TIMx_CCR4

 

 

 

 

 

 

Control Voltage 1

 

 

 

 

 

 

 

 

mbed boot faster

(Current uses clock "MCO" (external, from debugger board?!).

XTAL1 is not populated.

Must add XTAL.

Must change clock code to boot from external xtal.

https://duckduckgo.com/?q=mbed+faster+boot+time

https://developer.mbed.org/forum/helloworld/topic/1222/

 

mbed

https://developer.mbed.org/handbook/How-mbed-works

https://developer.mbed.org/handbook/mbed-interface

https://developer.mbed.org/handbook/mbed-Compiler

https://developer.mbed.org/questions/

 

Make mbed boot faster

https://developer.mbed.org/users/kenjiArai/notebook/nucleo-series-clock-structure-and-xtal-oscillation/

https://developer.mbed.org/questions/70461/Why-does-this-nucleo-board-lack-a-crysta/

http://stm32f4-discovery.net/2015/01/properly-set-clock-speed-stm32f4xx-devices/

https://developer.mbed.org/search/?q=stm32l476+startup

https://developer.mbed.org/questions/67987/STM32L476-LSE-startup-issues/

https://developer.mbed.org/users/Sissors/code/WakeUp/

 

http://www.st.com/content/ccc/resource/technical/document/application_note/group0/93/81/9b/8d/2f/09/4a/e8/DM00125306/files/DM00125306.pdf/jcr:content/translations/en.DM00125306.pdf

 

http://www.st.com/content/st_com/en/products/microcontrollers/stm32-32-bit-arm-cortex-mcus/stm32l4-series/stm32l4x6/stm32l476rg.html?icmp=pf260095_pron_pr_feb2015&sc=stm32l476-pr

 

mbed CAN bus issue with exporting makefiles

(needed to change clock possibly?)

https://developer.mbed.org/questions/70481/Nucleo-F303K8-ANY-project-fails-to-compi/

https://developer.mbed.org/questions/70477/Latest-mbed-lib-causing-issues-with-Nucl/

https://groups.google.com/forum/#!topic/mbed-devel/3OG2D7iiik0

 

https://developer.mbed.org/handbook/Getting-Started-mbed-Exporters

https://developer.mbed.org/handbook/Exporting-to-offline-toolchains

https://developer.mbed.org/handbook/Exporting-to-Make

 

 

STM32L476 and dev boards

https://www.tindie.com/products/onehorse/dragonfly-stm32l4-development-board/

http://www.st.com/content/st_com/en/products/microcontrollers/stm32-32-bit-arm-cortex-mcus/stm32l4-series/stm32l4x6/stm32l476rg.html

http://www.st.com/content/st_com/en/products/evaluation-tools/product-evaluation-tools/mcu-eval-tools/stm32-mcu-eval-tools/stm32-mcu-nucleo/nucleo-l476rg.html

http://www.emcu.it/STM32L4xx/STM32L4xx.html

http://www.emcu.it/STM32L4xx/STM32L4xx.html#NUCLEO-L476RG

http://www.mouser.com/new/stmicroelectronics/stm-stm32l4-mcu-fpu/

 

 

 

 

Cortex M4 General

https://github.com/matianfu/arabesque/wiki/STM32F4-Development-Environment-Setup-on-Ubuntu

http://askubuntu.com/questions/399133/how-to-install-arm-none-eabi-gdb-gdb-openocd-gcc-for-stm32-toolchain

 

 

EEL_CPU_A32_01 on gdrive

 

Original Synthesizer Module   ....    ( alternate link? )

 

Main additions to MarkII of this board are:

1. Circuit board layout overhaul

2. Components overhaul

 

Components Overhaul

40-pin sockets:

http://www.digikey.com/product-detail/en/ED40DT/ED3048-5-ND/4147604

http://www.digikey.com/product-detail/en/A40-LC-TT/AE10008-ND/821762

http://www.digikey.com/product-detail/en/243-40-1-06/1175-1481-ND/3441577

 

For terminal selection, see: Terminal Block Research

 

Done

 

Big changes

 

Physical

  1. Mode potentiometer removed
  2. Regulator moved off-board
  3. Added test points
  4. Terminal headers shrunk
  5. Added Mounting Holes

 

Electronic

  1. Added DIP switches for log mode / patch select
  2. Added dual digital audio out headers
  3. Changed 4.7uF bypass cap to 0.1uF
  4. Added 6-pin keyboard header 
  5. Added ground plane
  6. Correct error in VCC/VDD
  7. Added 6-pin AVRISP header.  References

 

Details

  1. More space around connectors
  2. Correct labels on parts
  3. All pins broken out to headers
  4. Reduced resistor size
  5. Added power terminals to keyboard

 

Todo

update chalkswitch drawing that Ayah made in 2006 :)

 

 

Notes:

Using AVR ISP MkII programmer on PC:

http://www.visualmicro.com/post/2014/01/17/AvrIsp-MkII-Usb-Driver-for-Arduino.aspx

 

avrdude -p m32 -c stk500 -P usb:02:98 -v -v  -U lfuse:r:lfusefile.hex:i

 

 

 

 

 

 

STLink board, RX, green, FTDI-232R, yellow, pin 5

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