Initial Commit

.cargo/config

@@ -0,0 +1,9 @@
+[target.riscv32imac-unknown-none-elf]
+rustflags = [
+  "-C", "link-arg=-Tmemory.x",
+  "-C", "link-arg=-Tlink.x",
+]
+runner = "riscv-none-embed-gdb -q -x openocd.gdb"
+
+[build]
+target = "riscv32imac-unknown-none-elf"

.gitignore

@@ -0,0 +1 @@
+/target

Cargo.lock

@@ -0,0 +1,269 @@
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Cargo.toml

@@ -0,0 +1,23 @@
+[package]
+name = "hello_gd32v_blink001"
+version = "0.1.0"
+authors = ["zry <admin@z-touhou.org>"]
+edition = "2018"
+
+[dependencies]
+gd32vf103xx-hal = "0.4.0"
+embedded-hal = "0.2.3"
+nb = "0.1.2"
+riscv = "0.6.0"
+riscv-rt = "0.8.0"
+panic-halt = "0.2.0"
+
+[[bin]]
+name = "hello_gd32v_blink001"
+test = false
+bench = false
+
+[profile.release]
+codegen-units = 1 # better optimizations
+debug = true # symbols are nice and they don't increase the size on Flash
+lto = true # better optimizations

Makefile

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+binary: hello_gd32v_blink001.bin
+
+hello_gd32v_blink001.bin: target/riscv32imac-unknown-none-elf/release/hello_gd32v_blink001
+	tools/riscv-nuclei-elf-objcopy.exe -O binary $< $@
+
+target/riscv32imac-unknown-none-elf/release/hello_gd32v_blink001: Cargo.toml memory.x src/*
+	cargo build --bin hello_gd32v_blink001 --target riscv32imac-unknown-none-elf --release

memory.x

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+MEMORY
+{
+    FLASH : ORIGIN = 0x08000000, LENGTH = 64K
+    RAM : ORIGIN = 0x20000000, LENGTH = 20K
+}
+
+REGION_ALIAS("REGION_TEXT", FLASH);
+REGION_ALIAS("REGION_RODATA", FLASH);
+REGION_ALIAS("REGION_DATA", RAM);
+REGION_ALIAS("REGION_BSS", RAM);
+REGION_ALIAS("REGION_HEAP", RAM);
+REGION_ALIAS("REGION_STACK", RAM);

openocd.cfg

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+adapter_khz     1000
+reset_config srst_only
+adapter_nsrst_assert_width 100
+
+
+
+interface jlink
+
+transport select jtag
+
+# autoexit true
+
+set _CHIPNAME riscv
+jtag newtap $_CHIPNAME cpu -irlen 5 -expected-id 0x1e200a6d
+
+set _TARGETNAME $_CHIPNAME.cpu
+target create $_TARGETNAME riscv -chain-position $_TARGETNAME
+$_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size 20480 -work-area-backup 0
+
+
+# Work-area is a space in RAM used for flash programming
+if { [info exists WORKAREASIZE] } {
+   set _WORKAREASIZE $WORKAREASIZE
+} else {
+   set _WORKAREASIZE 0x5000
+}
+
+# Allow overriding the Flash bank size
+if { [info exists FLASH_SIZE] } {
+    set _FLASH_SIZE $FLASH_SIZE
+} else {
+    # autodetect size
+    set _FLASH_SIZE 0
+}
+
+# flash size will be probed
+set _FLASHNAME $_CHIPNAME.flash
+
+flash bank $_FLASHNAME gd32vf103 0x08000000 0 0 0 $_TARGETNAME
+riscv set_reset_timeout_sec 1
+init
+
+halt
+
+

openocd.gdb

@@ -0,0 +1,15 @@
+
+target extended-remote :3333
+
+# print demangled symbols
+set print asm-demangle on
+
+# set backtrace limit to not have infinite backtrace loops
+set backtrace limit 32
+
+load
+
+break _start
+
+# start the process but immediately halt the processor
+stepi

src/main.rs

@@ -0,0 +1,32 @@
+#![no_std]
+#![no_main]
+
+use panic_halt as _;
+
+use riscv_rt::entry;
+use gd32vf103xx_hal::{pac, prelude::*};
+use gd32vf103xx_hal::delay::McycleDelay;
+use embedded_hal::digital::v2::OutputPin;
+
+#[entry]
+fn main() -> ! {
+    let dp = pac::Peripherals::take().unwrap();
+    let mut rcu = dp.RCU.configure().freeze();
+
+    let gpioa = dp.GPIOA.split(&mut rcu);
+    let mut delay = McycleDelay::new(&rcu.clocks);
+
+    let ledpin = gpioa.pa7;
+    let mut led = ledpin.into_push_pull_output();
+
+    loop {
+        led.set_high();
+        delay.delay_ms(500);
+        led.set_low();
+        delay.delay_ms(500);
+        led.set_high();
+        delay.delay_ms(200);
+        led.set_low();
+        delay.delay_ms(200);
+    }
+}