rm-hull/OPi.GPIO

Add support for Orange Pi Zero 3

PicoPlanetDev opened this issue · 4 comments

PicoPlanetDev commented

The Orange Pi Zero 3 uses an Allwinner H618 processor which appears to be very similar to the H616 used in the Zero 2. In fact, the pin mappings may even be identical. Here's a link to the Zero 3 schematic: OrangePi-Schematic of ZERO3.pdf

As soon as I get my Zero 3 in the mail, I'll see if I can figure out the physical to GPIO pin mappings and create a pull request. In the meantime, I'd love to hear if anyone has experimented with it yet!

BorretSquared commented

Would kill for this.

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PicoPlanetDev commented

I submitted a pull request but no news on it for a few months. In the meantime, I've got my fork https://github.com/PicoPlanetDev/OPi.GPIO that simply copies the Zero2 mapping to a new Zero3 file. This has been working flawlessly on my own Zero3 so far. Maybe this helps, although let me know if you want me to flesh it out a little further if needed.

techsd commented

OrangePi Zero2 has 26 GPIO pins, and OrangePi Zero3 has 28.
OrangePi Zero2 has 4 UART pins, and OrangePi Zero3 has 2.
OrangePi Zero2 has 2 SPI pins, and OrangePi Zero3 has 1.
OrangePi Zero2 has 1 I2C pin, and OrangePi Zero3 has 2.

Pin OrangePi Zero2 OrangePi Zero3
GPIO0 UART0 TX UART0 TX
GPIO1 UART0 RX UART0 RX
GPIO2 UART1 TX GPIO2
GPIO3 UART1 RX GPIO3
GPIO4 SPI0 MOSI SPI0 MOSI
GPIO5 SPI0 MISO SPI0 MISO
GPIO6 SPI0 SCLK SPI0 SCLK
GPIO7 SPI0 CE0 GPIO4
GPIO8 SPI0 CE1 GPIO5
GPIO9 I2C0 SCL I2C0 SCL
GPIO10 I2C0 SDA I2C0 SDA
GPIO11 GPIO11 GPIO11
GPIO12 GPIO12 GPIO12
GPIO13 GPIO13 GPIO13
GPIO14 GPIO14 GPIO14
GPIO15 GPIO15 GPIO15
GPIO16 GPIO16 GPIO16
GPIO17 GPIO17 GPIO17
GPIO18 GPIO18 GPIO18
GPIO19 GPIO19 GPIO19
GPIO20 GPIO20 GPIO20
GPIO21 GPIO21 GPIO21
GPIO22 GPIO22 GPIO22
GPIO23 GPIO23 GPIO23
GPIO24 GPIO24 GPIO24
GPIO25 GPIO25 GPIO25
GPIO26 GPIO26 GPIO26
GPIO27 GPIO27 GPIO27
GPIO28 GPIO28 GPIO28
pin number = (position of letter in alphabet - 1) * 32 + pin number So, PD14 will be (4 - 1) * 32 + 14 = 110

`# Orange Pi Zero 3 physical board pin to GPIO pin
BOARD = {
3: 229, # PH5/I2C3_SDA
5: 228, # PH4/I2C3_SCK
7: 73, # PC9
8: 226, # PH2/UART5_TX
10: 227, # PH3/UART5_RX
11: 70, # PC6
12: 75, # PC11
13: 69, # PC5
15: 72, # PC8
16: 79, # PC15
18: 78, # PC14
19: 231, # PH7,SPI1_MOSI
21: 232, # PH8,SPI1_MISO
22: 71, # PC7
23: 230, # PH6,SPI1_CLK
24: 233, # PH9,SPI1_CS
26: 74, # PC10
27: 234, # PH10/UART6_TX
28: 235, # PH11/UART6_RX
29: 236, # PH12/I2C4_SDA
30: 237, # PH13/I2C4_SCK
31: 238, # PH14/SPI2_MOSI
33: 239, # PH15/SPI2_MISO
34: 240, # PH16/SPI2_CLK
35: 241, # PH17/SPI2_CS
36: 242, # PH18/UART7_TX
37: 243, # PH19/UART7_RX
}

BCM mapping not identified yet, keeping it for compatibility

BCM = BOARD
`

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