From 9f77dbf5ae442c1cac0c652b4ef25bf1c82ed9d4 Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Thu, 29 Sep 2022 02:01:58 -0700 Subject: rp i2c: blocking example i2c example talking to mcp23017 i2c gpio expander. --- examples/rp/src/bin/i2c.rs | 70 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 examples/rp/src/bin/i2c.rs diff --git a/examples/rp/src/bin/i2c.rs b/examples/rp/src/bin/i2c.rs new file mode 100644 index 00000000..a5991d0d --- /dev/null +++ b/examples/rp/src/bin/i2c.rs @@ -0,0 +1,70 @@ +#![no_std] +#![no_main] +#![feature(type_alias_impl_trait)] + +use defmt::*; +use embassy_executor::Spawner; +use embassy_rp::i2c::{self, Config}; +use embassy_time::{Duration, Timer}; +use embedded_hal_1::i2c::blocking::I2c; +use {defmt_rtt as _, panic_probe as _}; + +#[allow(dead_code)] +mod mcp23017 { + pub const ADDR: u8 = 0x20; // default addr + + pub const IODIRA: u8 = 0x00; + pub const IPOLA: u8 = 0x02; + pub const GPINTENA: u8 = 0x04; + pub const DEFVALA: u8 = 0x06; + pub const INTCONA: u8 = 0x08; + pub const IOCONA: u8 = 0x0A; + pub const GPPUA: u8 = 0x0C; + pub const INTFA: u8 = 0x0E; + pub const INTCAPA: u8 = 0x10; + pub const GPIOA: u8 = 0x12; + pub const OLATA: u8 = 0x14; + pub const IODIRB: u8 = 0x01; + pub const IPOLB: u8 = 0x03; + pub const GPINTENB: u8 = 0x05; + pub const DEFVALB: u8 = 0x07; + pub const INTCONB: u8 = 0x09; + pub const IOCONB: u8 = 0x0B; + pub const GPPUB: u8 = 0x0D; + pub const INTFB: u8 = 0x0F; + pub const INTCAPB: u8 = 0x11; + pub const GPIOB: u8 = 0x13; + pub const OLATB: u8 = 0x15; +} + +#[embassy_executor::main] +async fn main(_spawner: Spawner) { + let p = embassy_rp::init(Default::default()); + + let sda = p.PIN_14; + let scl = p.PIN_15; + + info!("set up i2c "); + let mut i2c = i2c::I2c::new_blocking(p.I2C1, scl, sda, Config::default()); + + use mcp23017::*; + + info!("init mcp23017 config for IxpandO"); + // init - a outputs, b inputs + i2c.write(ADDR, &[IODIRA, 0x00]).unwrap(); + i2c.write(ADDR, &[IODIRB, 0xff]).unwrap(); + i2c.write(ADDR, &[GPPUB, 0xff]).unwrap(); // pullups + + let mut val = 0xaa; + loop { + let mut portb = [0]; + + i2c.write(mcp23017::ADDR, &[GPIOA, val]).unwrap(); + i2c.write_read(mcp23017::ADDR, &[GPIOB], &mut portb).unwrap(); + + info!("portb = {:02x}", portb[0]); + val = !val; + + Timer::after(Duration::from_secs(1)).await; + } +} -- cgit v1.2.3 From d5abd32da21998178216693a4d549a0f2683a4bb Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Sat, 1 Oct 2022 01:09:40 -0700 Subject: rename to i2c_blocking --- examples/rp/src/bin/i2c.rs | 70 ------------------------------------- examples/rp/src/bin/i2c_blocking.rs | 70 +++++++++++++++++++++++++++++++++++++ 2 files changed, 70 insertions(+), 70 deletions(-) delete mode 100644 examples/rp/src/bin/i2c.rs create mode 100644 examples/rp/src/bin/i2c_blocking.rs diff --git a/examples/rp/src/bin/i2c.rs b/examples/rp/src/bin/i2c.rs deleted file mode 100644 index a5991d0d..00000000 --- a/examples/rp/src/bin/i2c.rs +++ /dev/null @@ -1,70 +0,0 @@ -#![no_std] -#![no_main] -#![feature(type_alias_impl_trait)] - -use defmt::*; -use embassy_executor::Spawner; -use embassy_rp::i2c::{self, Config}; -use embassy_time::{Duration, Timer}; -use embedded_hal_1::i2c::blocking::I2c; -use {defmt_rtt as _, panic_probe as _}; - -#[allow(dead_code)] -mod mcp23017 { - pub const ADDR: u8 = 0x20; // default addr - - pub const IODIRA: u8 = 0x00; - pub const IPOLA: u8 = 0x02; - pub const GPINTENA: u8 = 0x04; - pub const DEFVALA: u8 = 0x06; - pub const INTCONA: u8 = 0x08; - pub const IOCONA: u8 = 0x0A; - pub const GPPUA: u8 = 0x0C; - pub const INTFA: u8 = 0x0E; - pub const INTCAPA: u8 = 0x10; - pub const GPIOA: u8 = 0x12; - pub const OLATA: u8 = 0x14; - pub const IODIRB: u8 = 0x01; - pub const IPOLB: u8 = 0x03; - pub const GPINTENB: u8 = 0x05; - pub const DEFVALB: u8 = 0x07; - pub const INTCONB: u8 = 0x09; - pub const IOCONB: u8 = 0x0B; - pub const GPPUB: u8 = 0x0D; - pub const INTFB: u8 = 0x0F; - pub const INTCAPB: u8 = 0x11; - pub const GPIOB: u8 = 0x13; - pub const OLATB: u8 = 0x15; -} - -#[embassy_executor::main] -async fn main(_spawner: Spawner) { - let p = embassy_rp::init(Default::default()); - - let sda = p.PIN_14; - let scl = p.PIN_15; - - info!("set up i2c "); - let mut i2c = i2c::I2c::new_blocking(p.I2C1, scl, sda, Config::default()); - - use mcp23017::*; - - info!("init mcp23017 config for IxpandO"); - // init - a outputs, b inputs - i2c.write(ADDR, &[IODIRA, 0x00]).unwrap(); - i2c.write(ADDR, &[IODIRB, 0xff]).unwrap(); - i2c.write(ADDR, &[GPPUB, 0xff]).unwrap(); // pullups - - let mut val = 0xaa; - loop { - let mut portb = [0]; - - i2c.write(mcp23017::ADDR, &[GPIOA, val]).unwrap(); - i2c.write_read(mcp23017::ADDR, &[GPIOB], &mut portb).unwrap(); - - info!("portb = {:02x}", portb[0]); - val = !val; - - Timer::after(Duration::from_secs(1)).await; - } -} diff --git a/examples/rp/src/bin/i2c_blocking.rs b/examples/rp/src/bin/i2c_blocking.rs new file mode 100644 index 00000000..a5991d0d --- /dev/null +++ b/examples/rp/src/bin/i2c_blocking.rs @@ -0,0 +1,70 @@ +#![no_std] +#![no_main] +#![feature(type_alias_impl_trait)] + +use defmt::*; +use embassy_executor::Spawner; +use embassy_rp::i2c::{self, Config}; +use embassy_time::{Duration, Timer}; +use embedded_hal_1::i2c::blocking::I2c; +use {defmt_rtt as _, panic_probe as _}; + +#[allow(dead_code)] +mod mcp23017 { + pub const ADDR: u8 = 0x20; // default addr + + pub const IODIRA: u8 = 0x00; + pub const IPOLA: u8 = 0x02; + pub const GPINTENA: u8 = 0x04; + pub const DEFVALA: u8 = 0x06; + pub const INTCONA: u8 = 0x08; + pub const IOCONA: u8 = 0x0A; + pub const GPPUA: u8 = 0x0C; + pub const INTFA: u8 = 0x0E; + pub const INTCAPA: u8 = 0x10; + pub const GPIOA: u8 = 0x12; + pub const OLATA: u8 = 0x14; + pub const IODIRB: u8 = 0x01; + pub const IPOLB: u8 = 0x03; + pub const GPINTENB: u8 = 0x05; + pub const DEFVALB: u8 = 0x07; + pub const INTCONB: u8 = 0x09; + pub const IOCONB: u8 = 0x0B; + pub const GPPUB: u8 = 0x0D; + pub const INTFB: u8 = 0x0F; + pub const INTCAPB: u8 = 0x11; + pub const GPIOB: u8 = 0x13; + pub const OLATB: u8 = 0x15; +} + +#[embassy_executor::main] +async fn main(_spawner: Spawner) { + let p = embassy_rp::init(Default::default()); + + let sda = p.PIN_14; + let scl = p.PIN_15; + + info!("set up i2c "); + let mut i2c = i2c::I2c::new_blocking(p.I2C1, scl, sda, Config::default()); + + use mcp23017::*; + + info!("init mcp23017 config for IxpandO"); + // init - a outputs, b inputs + i2c.write(ADDR, &[IODIRA, 0x00]).unwrap(); + i2c.write(ADDR, &[IODIRB, 0xff]).unwrap(); + i2c.write(ADDR, &[GPPUB, 0xff]).unwrap(); // pullups + + let mut val = 0xaa; + loop { + let mut portb = [0]; + + i2c.write(mcp23017::ADDR, &[GPIOA, val]).unwrap(); + i2c.write_read(mcp23017::ADDR, &[GPIOB], &mut portb).unwrap(); + + info!("portb = {:02x}", portb[0]); + val = !val; + + Timer::after(Duration::from_secs(1)).await; + } +} -- cgit v1.2.3 From c96581879cf054d9e4fec9272e5cecb165844cbb Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Sat, 1 Oct 2022 01:33:36 -0700 Subject: update embedded-hal api Also pin to alpha.9 since its a breaking change --- examples/rp/Cargo.toml | 2 +- examples/rp/src/bin/i2c_blocking.rs | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/examples/rp/Cargo.toml b/examples/rp/Cargo.toml index 3c8f923e..1bb6432e 100644 --- a/examples/rp/Cargo.toml +++ b/examples/rp/Cargo.toml @@ -26,7 +26,7 @@ st7789 = "0.6.1" display-interface = "0.4.1" byte-slice-cast = { version = "1.2.0", default-features = false } -embedded-hal-1 = { package = "embedded-hal", version = "1.0.0-alpha.8" } +embedded-hal-1 = { package = "embedded-hal", version = "=1.0.0-alpha.9" } embedded-hal-async = { version = "0.1.0-alpha.1" } embedded-io = { version = "0.3.0", features = ["async", "defmt"] } static_cell = "1.0.0" diff --git a/examples/rp/src/bin/i2c_blocking.rs b/examples/rp/src/bin/i2c_blocking.rs index a5991d0d..7623e33c 100644 --- a/examples/rp/src/bin/i2c_blocking.rs +++ b/examples/rp/src/bin/i2c_blocking.rs @@ -6,7 +6,7 @@ use defmt::*; use embassy_executor::Spawner; use embassy_rp::i2c::{self, Config}; use embassy_time::{Duration, Timer}; -use embedded_hal_1::i2c::blocking::I2c; +use embedded_hal_1::i2c::I2c; use {defmt_rtt as _, panic_probe as _}; #[allow(dead_code)] -- cgit v1.2.3