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firmware: add debug output to hmc542 driver.

This commit is contained in:
whitequark 2018-05-05 01:53:30 +00:00
parent 68ef09ed73
commit 8a70c18d1e
1 changed files with 5 additions and 1 deletions
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6
artiq/firmware/libboard_artiq/hmc542.rs
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@ -21,7 +21,7 @@ fn set_pins(card_index: usize, chan_index: usize, pins: u32) {
clock::spin_us(100); clock::spin_us(100);
} }
/// Attenuation is in units of 0.5dB, from 0dB (0) to 31.5dB (63). /// Attenuation is in units of 0.5 dB, from 0 dB (0) to 31.5 dB (63).
pub fn program(card_index: usize, chan_index: usize, atten: u8) { pub fn program(card_index: usize, chan_index: usize, atten: u8) {
assert!(card_index < 4 && chan_index < 2); assert!(card_index < 4 && chan_index < 2);
@ -42,6 +42,10 @@ pub fn program(card_index: usize, chan_index: usize, atten: u8) {
set_pins(sin | PIN_CLK); set_pins(sin | PIN_CLK);
} }
set_pins(PIN_LE); set_pins(PIN_LE);
debug!("card {} channel {} set to {}{} dB",
card_index, chan_index,
atten / 2, if atten % 2 != 0 { ".5" } else { "" });
} }
/// See `program`. /// See `program`.