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nrf/qspi: set correct config for flash chip in the nrf52840dk

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This commit is contained in:
Dario Nieuwenhuis 2021-05-27 00:42:46 +02:00
parent 3bd36dce76
commit da38de309b
2 changed files with 13 additions and 8 deletions
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17
embassy-nrf-examples/src/bin/qspi.rs
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@ -24,16 +24,17 @@ struct AlignedBuf([u8; 4096]);
#[embassy::main] #[embassy::main]
async fn main(_spawner: Spawner, p: Peripherals) { async fn main(_spawner: Spawner, p: Peripherals) {
let csn = p.P0_17; // Config for the MX25R64 present in the nRF52840 DK
let sck = p.P0_19; let mut config = qspi::Config::default();
let io0 = p.P0_20; config.read_opcode = qspi::ReadOpcode::READ4IO;
let io1 = p.P0_21; config.write_opcode = qspi::WriteOpcode::PP4IO;
let io2 = p.P0_22; config.write_page_size = qspi::WritePageSize::_256BYTES;
let io3 = p.P0_23;
let config = qspi::Config::default();
let irq = interrupt::take!(QSPI); let irq = interrupt::take!(QSPI);
let mut q = qspi::Qspi::new(p.QSPI, irq, sck, csn, io0, io1, io2, io3, config).await; let mut q = qspi::Qspi::new(
p.QSPI, irq, p.P0_19, p.P0_17, p.P0_20, p.P0_21, p.P0_22, p.P0_23, config,
)
.await;
let mut id = [1; 3]; let mut id = [1; 3];
q.custom_instruction(0x9F, &[], &mut id).await.unwrap(); q.custom_instruction(0x9F, &[], &mut id).await.unwrap();

4
embassy-nrf-examples/src/bin/qspi_lowpower.rs
View file

@ -27,7 +27,11 @@ async fn main(_spawner: Spawner, mut p: Peripherals) {
let mut irq = interrupt::take!(QSPI); let mut irq = interrupt::take!(QSPI);
loop { loop {
// Config for the MX25R64 present in the nRF52840 DK
let mut config = qspi::Config::default(); let mut config = qspi::Config::default();
config.read_opcode = qspi::ReadOpcode::READ4IO;
config.write_opcode = qspi::WriteOpcode::PP4IO;
config.write_page_size = qspi::WritePageSize::_256BYTES;
config.deep_power_down = Some(qspi::DeepPowerDownConfig { config.deep_power_down = Some(qspi::DeepPowerDownConfig {
enter_time: 3, // tDP = 30uS enter_time: 3, // tDP = 30uS
exit_time: 3, // tRDP = 35uS exit_time: 3, // tRDP = 35uS