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libboard/si5324: configure I2C mux on Sayma

This commit is contained in:
Sebastien Bourdeauducq 2017-12-15 16:45:26 +08:00
parent 341e809859
commit 9caef3c1d3
1 changed files with 6 additions and 4 deletions
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10
artiq/firmware/libboard/si5324.rs
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@ -8,10 +8,10 @@ type Result<T> = result::Result<T, &'static str>;
const BUSNO: u8 = 0;
const ADDRESS: u8 = 0x68;
#[cfg(soc_platform = "kc705")]
fn pca9548_select(channel: u8) -> Result<()> {
#[cfg(any(soc_platform = "sayma_amc", soc_platform = "kc705"))]
fn pca9548_select(address: u8, channel: u8) -> Result<()> {
i2c::start(BUSNO).unwrap();
if !i2c::write(BUSNO, (0x74 << 1)).unwrap() {
if !i2c::write(BUSNO, (address << 1)).unwrap() {
return Err("PCA9548 failed to ack write address")
}
if !i2c::write(BUSNO, 1 << channel).unwrap() {
@ -161,7 +161,9 @@ pub fn setup(settings: &FrequencySettings) -> Result<()> {
clock::spin_us(10_000);
#[cfg(soc_platform = "kc705")]
pca9548_select(7)?;
pca9548_select(0x74, 7)?;
#[cfg(soc_platform = "sayma_amc")]
pca9548_select(0x70, 4)?;
if ident()? != 0x0182 {
return Err("Si5324 does not have expected product number");