diff --git a/examples/stm32h742/.cargo/config.toml b/examples/stm32h742/.cargo/config.toml new file mode 100644 index 000000000..f30a52a79 --- /dev/null +++ b/examples/stm32h742/.cargo/config.toml @@ -0,0 +1,9 @@ +[target.'cfg(all(target_arch = "arm", target_os = "none"))'] +# replace STM32H742VITx with your chip as listed in `probe-rs chip list` +runner = "probe-rs run --chip STM32H742VITx" + +[build] +target = "thumbv7em-none-eabihf" + +[env] +DEFMT_LOG = "trace" diff --git a/examples/stm32h742/Cargo.toml b/examples/stm32h742/Cargo.toml new file mode 100644 index 000000000..e2e0094b8 --- /dev/null +++ b/examples/stm32h742/Cargo.toml @@ -0,0 +1,66 @@ +[package] +edition = "2021" +name = "embassy-stm32f7-examples" +version = "0.1.0" +license = "MIT OR Apache-2.0" + +[dependencies] +# Change stm32f777zi to your chip name, if necessary. +embassy-stm32 = { version = "0.2.0", path = "../../embassy-stm32", features = [ + "defmt", + "stm32h742vi", + "memory-x", + "unstable-pac", + "time-driver-any", + "exti", +] } +embassy-sync = { version = "0.6.2", path = "../../embassy-sync", features = [ + "defmt", +] } +embassy-executor = { version = "0.7.0", path = "../../embassy-executor", features = [ + "arch-cortex-m", + "executor-thread", + "defmt", +] } +embassy-time = { version = "0.4.0", path = "../../embassy-time", features = [ + "defmt", + "defmt-timestamp-uptime", + "tick-hz-32_768", +] } +embassy-net = { version = "0.7.0", path = "../../embassy-net", features = [ + "defmt", + "tcp", + "dhcpv4", + "medium-ethernet", +] } +embedded-io-async = { version = "0.6.1" } +embassy-usb = { version = "0.4.0", path = "../../embassy-usb", features = [ + "defmt", +] } +embassy-futures = { version = "0.1.0", path = "../../embassy-futures" } + +defmt = "0.3" +defmt-rtt = "0.4" + +cortex-m = { version = "0.7.6", features = [ + "inline-asm", + "critical-section-single-core", +] } +cortex-m-rt = "0.7.0" +embedded-hal = "0.2.6" +panic-probe = { version = "0.3", features = ["print-defmt"] } +heapless = { version = "0.8", default-features = false } +nb = "1.0.0" +rand_core = "0.6.3" +critical-section = "1.1" +embedded-storage = "0.3.1" +static_cell = "2" +sha2 = { version = "0.10.8", default-features = false } +hmac = "0.12.1" +aes-gcm = { version = "0.10.3", default-features = false, features = [ + "aes", + "heapless", +] } + +[profile.release] +debug = 2 diff --git a/examples/stm32h742/build.rs b/examples/stm32h742/build.rs new file mode 100644 index 000000000..8cd32d7ed --- /dev/null +++ b/examples/stm32h742/build.rs @@ -0,0 +1,5 @@ +fn main() { + println!("cargo:rustc-link-arg-bins=--nmagic"); + println!("cargo:rustc-link-arg-bins=-Tlink.x"); + println!("cargo:rustc-link-arg-bins=-Tdefmt.x"); +} diff --git a/examples/stm32h742/src/bin/qspi.rs b/examples/stm32h742/src/bin/qspi.rs new file mode 100644 index 000000000..aee07f3f2 --- /dev/null +++ b/examples/stm32h742/src/bin/qspi.rs @@ -0,0 +1,292 @@ +#![no_std] +#![no_main] +#![allow(dead_code)] // Allow dead code as not all commands are used in the example + +use defmt::info; +use embassy_executor::Spawner; +use embassy_stm32::mode::Blocking; +use embassy_stm32::qspi::enums::{AddressSize, ChipSelectHighTime, FIFOThresholdLevel, MemorySize, *}; +use embassy_stm32::qspi::{Config as QspiCfg, Instance, Qspi, TransferConfig}; +use embassy_stm32::Config as StmCfg; +use {defmt_rtt as _, panic_probe as _}; + +const MEMORY_PAGE_SIZE: usize = 256; + +const CMD_READ: u8 = 0x03; +const CMD_HS_READ: u8 = 0x0B; +const CMD_QUAD_READ: u8 = 0x6B; + +const CMD_WRITE_PG: u8 = 0xF2; +const CMD_QUAD_WRITE_PG: u8 = 0x32; + +const CMD_READ_ID: u8 = 0x9F; +const CMD_READ_UUID: u8 = 0x4B; + +const CMD_ENABLE_RESET: u8 = 0x66; +const CMD_RESET: u8 = 0x99; + +const CMD_WRITE_ENABLE: u8 = 0x06; +const CMD_WRITE_DISABLE: u8 = 0x04; + +const CMD_CHIP_ERASE: u8 = 0xC7; +const CMD_SECTOR_ERASE: u8 = 0x20; +const CMD_BLOCK_ERASE_32K: u8 = 0x52; +const CMD_BLOCK_ERASE_64K: u8 = 0xD8; + +const CMD_READ_SR: u8 = 0x05; +const CMD_READ_CR: u8 = 0x35; + +const CMD_WRITE_SR: u8 = 0x01; +const CMD_WRITE_CR: u8 = 0x31; +const MEMORY_ADDR: u32 = 0x00000001u32; + +/// Implementation of access to flash chip. +/// Chip commands are hardcoded as it depends on used chip. +/// This implementation is using chip GD25Q64C from Giga Device +pub struct FlashMemory { + qspi: Qspi<'static, I, Blocking>, +} + +impl FlashMemory { + pub fn new(qspi: Qspi<'static, I, Blocking>) -> Self { + let mut memory = Self { qspi }; + + memory.reset_memory(); + memory.enable_quad(); + + memory + } + + fn enable_quad(&mut self) { + let cr = self.read_cr(); + self.write_cr(cr | 0x02); + } + + fn exec_command(&mut self, cmd: u8) { + let transaction = TransferConfig { + iwidth: QspiWidth::SING, + awidth: QspiWidth::NONE, + dwidth: QspiWidth::NONE, + instruction: cmd, + address: None, + dummy: DummyCycles::_0, + }; + self.qspi.blocking_command(transaction); + } + + pub fn reset_memory(&mut self) { + self.exec_command(CMD_ENABLE_RESET); + self.exec_command(CMD_RESET); + self.wait_write_finish(); + } + + pub fn enable_write(&mut self) { + self.exec_command(CMD_WRITE_ENABLE); + } + + pub fn read_id(&mut self) -> [u8; 3] { + let mut buffer = [0; 3]; + let transaction: TransferConfig = TransferConfig { + iwidth: QspiWidth::SING, + awidth: QspiWidth::NONE, + dwidth: QspiWidth::SING, + instruction: CMD_READ_ID, + address: None, + dummy: DummyCycles::_0, + }; + self.qspi.blocking_read(&mut buffer, transaction); + buffer + } + + pub fn read_uuid(&mut self) -> [u8; 16] { + let mut buffer = [0; 16]; + let transaction: TransferConfig = TransferConfig { + iwidth: QspiWidth::SING, + awidth: QspiWidth::SING, + dwidth: QspiWidth::SING, + instruction: CMD_READ_UUID, + address: Some(0), + dummy: DummyCycles::_8, + }; + self.qspi.blocking_read(&mut buffer, transaction); + buffer + } + + pub fn read_memory(&mut self, addr: u32, buffer: &mut [u8]) { + let transaction = TransferConfig { + iwidth: QspiWidth::SING, + awidth: QspiWidth::SING, + dwidth: QspiWidth::QUAD, + instruction: CMD_QUAD_READ, + address: Some(addr), + dummy: DummyCycles::_8, + }; + self.qspi.blocking_read(buffer, transaction); + } + + fn wait_write_finish(&mut self) { + while (self.read_sr() & 0x01) != 0 {} + } + + fn perform_erase(&mut self, addr: u32, cmd: u8) { + let transaction = TransferConfig { + iwidth: QspiWidth::SING, + awidth: QspiWidth::SING, + dwidth: QspiWidth::NONE, + instruction: cmd, + address: Some(addr), + dummy: DummyCycles::_0, + }; + self.enable_write(); + self.qspi.blocking_command(transaction); + self.wait_write_finish(); + } + + pub fn erase_sector(&mut self, addr: u32) { + self.perform_erase(addr, CMD_SECTOR_ERASE); + } + + pub fn erase_block_32k(&mut self, addr: u32) { + self.perform_erase(addr, CMD_BLOCK_ERASE_32K); + } + + pub fn erase_block_64k(&mut self, addr: u32) { + self.perform_erase(addr, CMD_BLOCK_ERASE_64K); + } + + pub fn erase_chip(&mut self) { + self.exec_command(CMD_CHIP_ERASE); + } + + fn write_page(&mut self, addr: u32, buffer: &[u8], len: usize) { + assert!( + (len as u32 + (addr & 0x000000ff)) <= MEMORY_PAGE_SIZE as u32, + "write_page(): page write length exceeds page boundary (len = {}, addr = {:X}", + len, + addr + ); + + let transaction = TransferConfig { + iwidth: QspiWidth::SING, + awidth: QspiWidth::SING, + dwidth: QspiWidth::QUAD, + instruction: CMD_QUAD_WRITE_PG, + address: Some(addr), + dummy: DummyCycles::_0, + }; + self.enable_write(); + self.qspi.blocking_write(buffer, transaction); + self.wait_write_finish(); + } + + pub fn write_memory(&mut self, addr: u32, buffer: &[u8]) { + let mut left = buffer.len(); + let mut place = addr; + let mut chunk_start = 0; + + while left > 0 { + let max_chunk_size = MEMORY_PAGE_SIZE - (place & 0x000000ff) as usize; + let chunk_size = if left >= max_chunk_size { max_chunk_size } else { left }; + let chunk = &buffer[chunk_start..(chunk_start + chunk_size)]; + self.write_page(place, chunk, chunk_size); + place += chunk_size as u32; + left -= chunk_size; + chunk_start += chunk_size; + } + } + + fn read_register(&mut self, cmd: u8) -> u8 { + let mut buffer = [0; 1]; + let transaction: TransferConfig = TransferConfig { + iwidth: QspiWidth::SING, + awidth: QspiWidth::NONE, + dwidth: QspiWidth::SING, + instruction: cmd, + address: None, + dummy: DummyCycles::_0, + }; + self.qspi.blocking_read(&mut buffer, transaction); + buffer[0] + } + + fn write_register(&mut self, cmd: u8, value: u8) { + let buffer = [value; 1]; + let transaction: TransferConfig = TransferConfig { + iwidth: QspiWidth::SING, + awidth: QspiWidth::NONE, + dwidth: QspiWidth::SING, + instruction: cmd, + address: None, + dummy: DummyCycles::_0, + }; + self.qspi.blocking_write(&buffer, transaction); + } + + pub fn read_sr(&mut self) -> u8 { + self.read_register(CMD_READ_SR) + } + + pub fn read_cr(&mut self) -> u8 { + self.read_register(CMD_READ_CR) + } + + pub fn write_sr(&mut self, value: u8) { + self.write_register(CMD_WRITE_SR, value); + } + + pub fn write_cr(&mut self, value: u8) { + self.write_register(CMD_WRITE_CR, value); + } +} + +#[embassy_executor::main] +async fn main(_spawner: Spawner) -> ! { + let mut config = StmCfg::default(); + { + use embassy_stm32::rcc::*; + config.rcc.hsi = Some(HSIPrescaler::DIV1); + config.rcc.csi = true; + config.rcc.hsi48 = Some(Default::default()); // needed for RNG + config.rcc.pll1 = Some(Pll { + source: PllSource::HSI, + prediv: PllPreDiv::DIV4, + mul: PllMul::MUL50, + divp: Some(PllDiv::DIV2), + divq: None, + divr: None, + }); + config.rcc.sys = Sysclk::PLL1_P; // 400 Mhz + config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz + config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz + config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz + config.rcc.apb3_pre = APBPrescaler::DIV2; // 100 Mhz + config.rcc.apb4_pre = APBPrescaler::DIV2; // 100 Mhz + config.rcc.voltage_scale = VoltageScale::Scale1; + } + let p = embassy_stm32::init(config); + info!("Embassy initialized"); + + let config = QspiCfg { + memory_size: MemorySize::_8MiB, + address_size: AddressSize::_24bit, + prescaler: 16, + cs_high_time: ChipSelectHighTime::_1Cycle, + fifo_threshold: FIFOThresholdLevel::_16Bytes, + }; + let driver = Qspi::new_blocking_bank1(p.QUADSPI, p.PD11, p.PD12, p.PE2, p.PD13, p.PB2, p.PB10, config); + let mut flash = FlashMemory::new(driver); + let flash_id = flash.read_id(); + info!("FLASH ID: {:?}", flash_id); + let mut wr_buf = [0u8; 256]; + for i in 0..256 { + wr_buf[i] = i as u8; + } + let mut rd_buf = [0u8; 256]; + flash.erase_sector(MEMORY_ADDR); + flash.write_memory(MEMORY_ADDR, &wr_buf); + flash.read_memory(MEMORY_ADDR, &mut rd_buf); + info!("WRITE BUF: {:?}", wr_buf); + info!("READ BUF: {:?}", rd_buf); + info!("End of Program, proceed to empty endless loop"); + loop {} +}