Repackage to pyproject/hatch and port to gpiod

[Gadgetoid]

This PR upgrades the packaging to our latest boilerplate and ports additional pins to gpiod/gpiodevice. Part of an effort to bring enviro up to speed with Raspberry Pi 5 - pimoroni/enviroplus-python#126

Note: This library uses SPI and requires this patch - raspberrypi/linux@686fe77 - to function without raising a TimeoutError on Pi 5.

Pi 5 / Raspberry Pi OS

Make sure your user is in the group spi and enable SPI with dtparam=spi=on or via raspi-config

Rock 5B / Armbian

On ROCK5B and possibly other modern platforms, it needs a custom dtoverlay to remove control of MISO from the spi driver, otherwise the data/command pin cannot be asserted by gpiod.

In /etc/udev/rules.d/60-spidev.rules:

SUBSYSTEM=="spidev", GROUP="gpio", MODE="0660"

Then:

sudo udevadm control --reload-rules
sudo udevadm trigger

Make sure your user is in the gpio group:

sudo usermod -a -G gpio $USER

Create a new file rk3588-spi0-m2-cs1-nomiso-spidev.dts with the dts code below.

Install with: sudo armbian-add-overlay rk3588-spi0-m2-cs1-nomiso-spidev.dts

/dts-v1/;
/plugin/;

/ {
	fragment@0 {
		target = <&spi0>;

		__overlay__ {
			status = "okay";
			#address-cells = <1>;
			#size-cells = <0>;
			pinctrl-names = "default";
			pinctrl-0 = <&spi0m2_cs1 &spi0m2_nomiso_pins>;
			max-freq = <50000000>;

			spidev@1 {
				compatible = "rockchip,spidev";
				status = "okay";
				reg = <1>;
				spi-max-frequency = <50000000>;
			};
		};
	};
	fragment@1 {
		target = <&pinctrl>;

		__overlay__ {

			spi0 {

				spi0m2_nomiso_pins: spi0m2-nomiso-pins {
					rockchip,pins =
						/* spi0_clk_m2 */
						<1 11 8 &pcfg_pull_up_drv_level_6>,
						/* spi0_miso_m2 */
						/*<1 9 8 &pcfg_pull_up_drv_level_6>,*/
						/* spi0_mosi_m2 */
						<1 10 8 &pcfg_pull_up_drv_level_6>;
				};
			};
		};
	};
};

[coveralls]

Pull Request Test Coverage Report for Build 6796461761

• 70 of 70 (100.0%) changed or added relevant lines in 5 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.4%) to 98.428%

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Totals
Change from base Build 5784058181:	0.4%
Covered Lines:	313
Relevant Lines:	318

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💛 - Coveralls