You are here: start » boards » rpi

Differences

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

Link to this comparison view

Both sides previous revision Previous revision
Next revision 		Previous revision
Last revision Both sides next revision
boards:rpi [2015/02/15 13:16]
darron [GPIO] 		boards:rpi [2021/10/30 09:50]
darron
Line 3: Line 3:
 {{:boards:pibplus.jpg?200|Roys Rolls}} {{:boards:pibplus.jpg?200|Roys Rolls}}
 \\ \\ \\ \\
-{{:boards:rpi2b.jpg?200|Flash proof}}+{{:boards:pi3-idle.jpg?200|Pi3 idle temperature}}
 </wrap> </wrap>
  
Line 14: Line 14:
                 +---P1---+                 +---P1---+
 3V3             01      02 5V 3V3             01      02 5V
-GPIO0/GPIO2     03 A/A+ 04 5V +GPIO0/GPIO2/SDA 03 A/A+ 04 5V 
-GPIO1/GPIO3     05 B/B+ 06 GND+GPIO1/GPIO3/SCL 05 B/B+ 06 GND
 GPIO4           07 2    08 GPIO14/TX GPIO4           07 2    08 GPIO14/TX
 GND             09      10 GPIO15/RX GND             09      10 GPIO15/RX
Line 22: Line 22:
 GPIO22          15      16 GPIO23 GPIO22          15      16 GPIO23
 3V3             17      18 GPIO24 3V3             17      18 GPIO24
-GPIO10          19      20 GND +GPIO10/MOSI     19      20 GND 
-GPIO9           21      22 GPIO25 +GPIO9 /MISO     21      22 GPIO25 
-GPIO11          23      24 GPIO8 +GPIO11/SCLK     23      24 GPIO8/CE0 
-GND             25______26 GPIO7+GND             25______26 GPIO7/CE1
 EEPROM ID_SD    27      28 EEPROM ID_SC EEPROM ID_SD    27      28 EEPROM ID_SC
 GPIO5           29 A+   30 GND GPIO5           29 A+   30 GND
Line 38: Line 38:
 Ribbon cables may be used to extend the GPIOs. In this instance a female presentation will be given. Ribbon cables may be used to extend the GPIOs. In this instance a female presentation will be given.
  
-For the older models, a 26-pin ribbon is needed, this is much like an old midi daughter-board cable.+For the older models, a 26-pin ribbon is needed.
 <code> <code>
   _________________________________________   _________________________________________
  /                                        /  /                                        /
------------------------------------------+++----------------------------------------+
 |  7  8 25 0V 24 23 0V 18 15 14 0V 5V 5V | |  7  8 25 0V 24 23 0V 18 15 14 0V 5V 5V |
 |                                        | |                                        |
Line 62: Line 62:
 </code> </code>
 === Pickle Microchip PIC ICSP === === Pickle Microchip PIC ICSP ===
 +<wrap right>
 +{{:boards:pi2wht.jpg?200|My 2nd Pi2}}
 +\\ \\
 +{{:boards:rpi2b.jpg?200|Flash proof}}
 +</wrap>
 +
 +Along with USB serial we can use the RPi GPIOs to program PICMicros using [[projects:pickle|Pickle Microchip PIC ICSP]].
 +
 +Memory mapped I/O can be used to drive the GPIOs, however, the [[projects:gpio-bb|GPIO bit-bang driver for Linux]] may also be utilised on the RPi if preferred.
  
 == High Voltage Programming with Vellman K8048 == == High Voltage Programming with Vellman K8048 ==
  
-[[:boards:rpi:k8048|Velleman K8048 interface]]+The RPi cannot interface directly with 5V PICMicros nor generate the high voltage required for high voltage ICSP and an interface is required for the GPIOs. 
 + 
 +Here is an example for the [[:projects:k8048-rpi|Velleman K8048]]. Of course, this particular device can be interfaced using a USB serial port, however, this would be slower.
  
 == Low Voltage Programming with VPP at 3V3 == == Low Voltage Programming with VPP at 3V3 ==
  
-The following connections refer to the R-PI GPIO header directly. Ensure that power is only ever applied from GPIO 3V3 on PIN 1 and never 5V.+Low voltage ICSP at 3V3 can be performed directly from the RPi GPIOs.
  
-Single common data I/O connection (RPI or GPIO bit-bang driver for R-PI & OpenWRT)+The following connections refer to the R-PI GPIO header. Ensure that power is only ever applied from GPIO 3V3 on PIN 1 and never 5V.
  
 +Single common data I/O connection (RPI or GPIO bit-bang driver)
 <code> <code>
- R-PI                              PICMicro       GPIO header     .k8048 + R-PI                              PICMicro       GPIO header     .pickle 
- ====                              ========       ===========     ======+ ====                              ========       ===========     =======
  
  3V3-------------------------------VDD--+         PIN 1 (P1-01)  3V3-------------------------------VDD--+         PIN 1 (P1-01)
Line 93: Line 105:
 (R2) 10K where appropriate (PGM is not present on all devices). (R2) 10K where appropriate (PGM is not present on all devices).
 (R3..R6) 470R. (R3..R6) 470R.
 +
 +DEVICE=RPI    AUTO-DETECT (modern kernel)
 +DEVICE=RPI0   0 / 0W
 +DEVICE=RPI1   1
 +DEVICE=RPI2   2 / 02W
 +DEVICE=RPI3   3
 +DEVICE=RPI4   4 / 400
 + or
 +DEVICE=GPIO-BB
 +IFACE=/dev/gpio-bb
 </code> </code>
  
 == Display LVP device identity without PGM == == Display LVP device identity without PGM ==
 +<wrap right>
 +{{:boards:pi0.jpg?200|They do exist}}
 +\\ \\
 +{{:boards:pi0case.jpg?200|Version 1.3}}
 +\\ \\
 +{{:boards:pi0case2.jpg?200|Version 1.2}}
 +</wrap>
 +
 <code> <code>
 p16 lvp id p16 lvp id
Line 130: Line 160:
 Total: 732 Fail: 0 Total: 732 Fail: 0
 </code> </code>
- 
 === Resources === === Resources ===
 [[http://elinux.org/RPi_Low-level_peripherals#General_Purpose_Input.2FOutput_.28GPIO.29|RPi GPIO]]\\ [[http://elinux.org/RPi_Low-level_peripherals#General_Purpose_Input.2FOutput_.28GPIO.29|RPi GPIO]]\\
 [[https://github.com/voidlinux/documentation/wiki/Raspberry-Pi|Void Linux for Raspberry Pi]]\\ [[https://github.com/voidlinux/documentation/wiki/Raspberry-Pi|Void Linux for Raspberry Pi]]\\
-