Releases · denko-rb/lgpio

12 Oct 05:14

vickash

v0.1.11

a26ab57

v0.1.11 Latest

Latest

General:

Better validation of Ruby arrays inside C functions
Added LGPIO.micro_delay(duration)

Hardware PWM:

Ensure polarity is always set to :normal on initialize, not :inversed by default on some hardware
Add #polarity, #polarity= and #frequency
Duty cycles are now correctly set as floats, not integers

Hardware SPI:

Allow reading and writing different lengths in LGPIO.spi_xfer. Now requires a 3rd arg always, for number of bytes to read.

Bit-Bang I2C:

Move bit level operations back into C. Very little C code, so still mostly Ruby to maintain, but much faster where YJIT isn't available (mostly Raspberry Pi Zero W). On newer boards performance difference is negligible.

Assets 3

28 Sep 23:25

vickash

v0.1.10

2b8c4af

v0.1.10

Fix I2CBitBang and SPIBitBang, which were broken by the last version.
They both now take a hash of pin hashes for initialization, and can work across gpiochip devices.
Each pin hash must have an already open LGPIO handle (NOT chip number) for the chip to be used, and which line number of that chip is to be used.
I2C example: { scl: { handle: h0, line: 1 }, sda: { handle: h1, line: 15 } }
SPI example: { clock: { handle: h0, line: 3 }, input: { handle: h1, line: 4 }, output: { handle: h2, line: 5 } }

Assets 2

28 Sep 17:34

vickash

v0.1.9

d6232b3

v0.1.9

Changed arg order for _claim_ methods, compared to lgpio C, so that gpio number (or group of numbers) always follows handle. The general pattern is handle, gpio, flags, state. This affects:
- gpio_claim_input
- gpio_claim_output
- gpio_claim_alert
- group_claim_input
- group_claim_output

Helpful on boards where the usable GPIO lines are spread across multiple /dev/gpiochipN devices. Lines/groups can be referred to by tuples of [gpiochip, line/group], then then splatted when given to these methods.

Assets 3