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hmc7043: check that chip is disabled at startup
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740e6863c3
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3d0e92aefd
@ -227,10 +227,16 @@ pub mod hmc7043 {
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}
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}
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pub fn detect() -> Result<(), &'static str> {
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pub const CHIP_ID: u32 = 0xf17904;
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pub fn get_id() -> u32 {
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spi_setup();
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let id = (read(0x78) as u32) << 16 | (read(0x79) as u32) << 8 | read(0x7a) as u32;
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if id != 0xf17904 {
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(read(0x78) as u32) << 16 | (read(0x79) as u32) << 8 | read(0x7a) as u32
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}
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pub fn detect() -> Result<(), &'static str> {
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let id = get_id();
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if id != CHIP_ID {
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error!("invalid HMC7043 ID: 0x{:08x}", id);
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return Err("invalid HMC7043 identification");
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} else {
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@ -340,6 +346,9 @@ pub fn init() -> Result<(), &'static str> {
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hmc830::check_locked()?;
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if hmc7043::get_id() == hmc7043::CHIP_ID {
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error!("HMC7043 detected while in reset (board rework missing?)");
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}
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hmc7043::enable();
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hmc7043::detect()?;
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hmc7043::init();
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