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ad7172: add identify()

This commit is contained in:
Astro 2019-08-29 23:56:02 +02:00
parent 574b96187a
commit 2b855c8ad9
1 changed files with 8 additions and 0 deletions
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8
firmware/src/ad7172.rs
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@ -56,6 +56,14 @@ impl<SPI: Transfer<u8>, NSS: OutputPin> Adc<SPI, NSS> {
Ok(adc) Ok(adc)
} }
/// `0x00DX` for AD7271-2
pub fn identify(&mut self) -> Option<u16> {
let mut buf = [0u8; 3];
self.read_reg(Register::Id, &mut buf)
.ok()
.map(|()| (u16::from(buf[1]) << 8) | u16::from(buf[2]))
}
/// Returns the channel the data is from /// Returns the channel the data is from
pub fn data_ready(&mut self) -> Option<u8> { pub fn data_ready(&mut self) -> Option<u8> {
let mut buf = [0u8; 2]; let mut buf = [0u8; 2];