cmd_handler: Add new cmd to for commit hash

src/net/cmd_handler.rs

@@ -1,4 +1,4 @@
-use core::{fmt::Debug, marker::PhantomData};
+use core::{fmt::Debug, marker::PhantomData, env};
 
 use log::{debug, info};
 use miniconf::{JsonCoreSlash, Tree};
@@ -27,6 +27,7 @@ pub enum ResponseEnum {
     Settings,
     Report,
     HwRev,
+    FirmwareRev,
     Interval,
     Acknowledge,
     InvalidDatatype,
@@ -60,11 +61,33 @@ pub struct ResponseObj<'a> {
     json: Response<'a>,
 }
 
+#[derive(Deserialize, Serialize, Copy, Clone, Debug)]
+pub struct FirmwareRevType<'a> {
+    msg_type: ResponseEnum,
+    firmware_rev: Option<&'a str>,
+}
+
+impl Default for FirmwareRevType<'static> {
+    fn default() -> Self {
+        FirmwareRevType {
+            msg_type: ResponseEnum::Reserved,
+            firmware_rev: None,
+        }
+    }
+}
+
+#[derive(Deserialize, Serialize, Copy, Clone, Debug, Tree)]
+pub struct FirmwareRevObj<'a> {
+    #[serde(borrow)]
+    json: FirmwareRevType<'a>,
+}
+
 #[derive(Deserialize, Serialize, Copy, Clone, Default, Debug)]
 enum DeviceCmd {
     #[default]
     Reserved,
     GetHwRev,
+    GetFirmwareRev,
     SetIPSettings,
     SetPdFinGain,
     SetPdTransconductance,
@@ -258,6 +281,20 @@ pub fn send_status_report(
     net::eth_send(buffer, num_bytes, *socket);
 }
 
+pub fn send_firmware_rev(buffer: &mut [u8], socket: &mut SocketHandle){
+    let response = FirmwareRevObj {
+        json: FirmwareRevType {
+            msg_type: ResponseEnum::FirmwareRev,
+            firmware_rev: Some(env!("BUILD_REVISION")),
+        },
+    };
+
+    let mut num_bytes = response.get_json("/json", buffer).unwrap();
+    buffer[num_bytes] = b'\n';
+    num_bytes += 1;
+    net::eth_send(buffer, num_bytes, *socket);
+}
+
 pub fn send_hw_rev(buffer: &mut [u8], hw_rev_o: &mut HWRev, socket: &mut SocketHandle) {
     let hw_rev = HwRevObj {
         json: HwRevType {
@@ -395,6 +432,9 @@ pub fn execute_cmd(
                 Some(DeviceCmd::GetHwRev) => {
                     send_hw_rev(buffer, hw_rev, socket);
                 }
+                Some(DeviceCmd::GetFirmwareRev) => {
+                    send_firmware_rev(buffer, socket);
+                }
                 Some(DeviceCmd::GetStatusReport) => {
                     send_status_report(buffer, laser, thermostat, socket);
                 }