share identifier_read between runtime and satman

src/libboard_artiq/src/lib.rs

@@ -15,3 +15,18 @@ pub mod drtioaux;
 pub mod drtio_routing;
 pub mod si5324;
 pub mod logger;
+
+use core::{cmp, str};
+
+pub fn identifier_read(buf: &mut [u8]) -> &str {
+    unsafe {
+        pl::csr::identifier::address_write(0);
+        let len = pl::csr::identifier::data_read();
+        let len = cmp::min(len, buf.len() as u8);
+        for i in 0..len {
+            pl::csr::identifier::address_write(1 + i);
+            buf[i as usize] = pl::csr::identifier::data_read();
+        }
+        str::from_utf8_unchecked(&buf[..len as usize])
+    }
+}

src/runtime/src/main.rs

@@ -11,7 +11,6 @@
 
 extern crate alloc;
 
-use core::{cmp, str};
 use log::{info, warn, error};
 
 use libboard_zynq::{timer::GlobalTimer, mpcore, gic, slcr};
@@ -23,7 +22,7 @@ use embedded_hal::blocking::delay::DelayMs;
 use libconfig::Config;
 use libregister::RegisterW;
 use libcortex_a9::l2c::enable_l2_cache;
-use libboard_artiq::logger;
+use libboard_artiq::{logger, identifier_read};
 #[cfg(feature = "target_kasli_soc")]
 use libboard_artiq::si5324;
 
@@ -71,19 +70,6 @@ fn init_gateware() {
     });
 }
 
-fn identifier_read(buf: &mut [u8]) -> &str {
-    unsafe {
-        pl::csr::identifier::address_write(0);
-        let len = pl::csr::identifier::data_read();
-        let len = cmp::min(len, buf.len() as u8);
-        for i in 0..len {
-            pl::csr::identifier::address_write(1 + i);
-            buf[i as usize] = pl::csr::identifier::data_read();
-        }
-        str::from_utf8_unchecked(&buf[..len as usize])
-    }
-}
-
 fn init_rtio(timer: &mut GlobalTimer, cfg: &Config) {
     let clock_sel =
         if let Ok(rtioclk) = cfg.read_str("rtioclk") {

src/satman/main.rs

@@ -10,23 +10,10 @@ use libboard_zynq::timer::GlobalTimer;
 #[cfg(has_si5324)]
 use libboard_artiq::si5324;
 use board_artiq::spi; // <- port?, use libboard_zynq (if spi available/necessary)
-use libboard_artiq::{pl::csr, drtio_routing, drtioaux, logger};
+use libboard_artiq::{pl::csr, drtio_routing, drtioaux, logger, identifier_read};
 
 mod repeater;
 
-fn identifier_read(buf: &mut [u8]) -> &str {
-    unsafe {
-        csr::identifier::address_write(0);
-        let len = csr::identifier::data_read();
-        let len = cmp::min(len, buf.len() as u8);
-        for i in 0..len {
-            csr::identifier::address_write(1 + i);
-            buf[i as usize] = csr::identifier::data_read();
-        }
-        str::from_utf8_unchecked(&buf[..len as usize])
-    }
-}
-
 fn drtiosat_reset(reset: bool) {
     unsafe {
         csr::drtiosat::reset_write(if reset { 1 } else { 0 });