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zynq::flash: add working erase(), add barely working program()

This commit is contained in:
Astro 2019-12-16 00:48:39 +01:00
parent 1dbb358a4c
commit dd0fe054d7
1 changed files with 55 additions and 0 deletions

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@ -1,5 +1,6 @@
//! Quad-SPI Flash Controller
use crate::{print, println};
use core::marker::PhantomData;
use crate::regs::{RegisterR, RegisterW, RegisterRW};
use super::slcr;
@ -26,6 +27,12 @@ const INST_READ: u8 = 0x03;
const INST_WRDI: u8 = 0x04;
/// Instruction: Write Enable
const INST_WREN: u8 = 0x06;
/// Instruction: Program page
const INST_PP: u8 = 02;
/// Instruction: Sector Erase
const INST_SE: u8 = 0xD8;
/// Instruction: Erase 4K Block
const INST_BE_4K: u8 = 0x20;
#[derive(Clone)]
pub enum SpiWord {
@ -411,6 +418,54 @@ impl Flash<Manual> {
.bytes_transfer().skip(6).take(len)
}
pub fn erase(&mut self, offset: u32) {
let args = Some(((INST_BE_4K as u32) << 24) | (offset as u32));
self.transfer(args.into_iter(), 4);
let sr1 = self.wait_while_sr1_zeroed();
if sr1.e_err() {
println!("E_ERR");
} else if sr1.p_err() {
println!("P_ERR");
} else if sr1.wip() {
print!("Erase in progress");
while self.read_reg::<SR1>().wip() {
print!(".");
}
println!("");
} else {
println!("erased? sr1={:02X}", sr1.inner);
}
}
pub fn program<I: Iterator<Item=u32>>(&mut self, offset: u32, data: I) {
{
let len = 4 + 4 * data.size_hint().0;
let args = Some(SpiWord::W32(((INST_PP as u32) << 24) | (offset as u32)))
.into_iter()
.chain(data.map(SpiWord::W32));
self.transfer(args, len);
}
// let sr1 = self.wait_while_sr1_zeroed();
let sr1 = self.read_reg::<SR1>();
if sr1.e_err() {
println!("E_ERR");
} else if sr1.p_err() {
println!("P_ERR");
} else if sr1.wip() {
println!("Program in progress");
while self.read_reg::<SR1>().wip() {
print!(".");
}
println!("");
} else {
println!("programmed? sr1={:02X}", sr1.inner);
}
}
pub fn write_enabled<F: Fn(&mut Self) -> R, R>(&mut self, f: F) -> R {
// Write Enable
let args = Some(INST_WREN);