From e04fec33f079db4c5d42aa412f7b670784ec1b68 Mon Sep 17 00:00:00 2001
From: "Matthias P. Braendli" <matthias.braendli@mpb.li>
Date: Mon, 13 Mar 2023 23:14:32 +0100
Subject: Add WSPR TX to eval-clock-cw-tx

---
 sw/eval-clock-cw-tx/src/usb.rs | 45 +++++++++++++++++++++++++++++-------------
 1 file changed, 31 insertions(+), 14 deletions(-)

(limited to 'sw/eval-clock-cw-tx/src/usb.rs')

diff --git a/sw/eval-clock-cw-tx/src/usb.rs b/sw/eval-clock-cw-tx/src/usb.rs
index d75c287..b7e8536 100644
--- a/sw/eval-clock-cw-tx/src/usb.rs
+++ b/sw/eval-clock-cw-tx/src/usb.rs
@@ -52,6 +52,9 @@ static mut USB_DEVICE: Option<UsbDevice<UsbBusType>> = None;
  *
  * Set FELDHELL narrow font
  * fontn
+ *
+ * Trigger a WSPR transmission
+ * wspr
 */
 
 
@@ -75,10 +78,13 @@ pub fn enable_interrupts() {
     }
 }
 
+#[derive(PartialEq, Clone, Copy)]
+pub enum Transmit { None, FELDHELL, WSPR }
+
 pub struct USBData {
     font : Font,
-    pub frequency : u32,
-    pub transmit : bool,
+    frequency : Option<u32>,
+    transmit : Transmit,
 
     current_str : ArrayVec::<u8, 96>,
     send_ix : usize,
@@ -121,15 +127,15 @@ impl USBData {
         }
 
         USBData {
-            font : Font::Wide,
-            frequency : 10121000,
-            transmit : false,
-            current_str : ArrayVec::new(),
-            send_ix : 0,
+            font: Font::Wide,
+            frequency: None,
+            transmit: Transmit::None,
+            current_str: ArrayVec::new(),
+            send_ix: 0,
         }
     }
 
-    fn send_once(&mut self, message : &[u8]) {
+    pub fn send_message(&mut self, message : &[u8]) {
         cortex_m::interrupt::free(|_cs| {
             let serial = unsafe { USB_SERIAL.as_mut().unwrap() };
             serial.write(message).ok();
@@ -137,11 +143,11 @@ impl USBData {
     }
 
     pub fn send_receive(&mut self) {
-        self.send_once(b"Switch RX\n");
+        self.send_message(b"Switch RX\n");
     }
 
     pub fn send_transmit(&mut self) {
-        self.send_once(b"Switch TX\n");
+        self.send_message(b"Switch TX\n");
     }
 
     pub fn handle(&mut self) {
@@ -189,12 +195,12 @@ impl USBData {
         if let Some(m) = in_message {
             if m.as_str() == "tx\n" {
                 outgoing.try_extend_from_slice(b"TX ok\n").ok();
-                self.transmit = true;
+                self.transmit = Transmit::FELDHELL;
             }
             else if m.as_str() == "rx\n" {
                 outgoing.try_extend_from_slice(b"RX ok\n").ok();
                 self.current_str.clear();
-                self.transmit = false;
+                self.transmit = Transmit::None;
             }
             else if m.chars().nth(0).unwrap() == 'm' {
                 self.current_str.clear();
@@ -211,6 +217,10 @@ impl USBData {
                 self.font = Font::Narrow;
                 outgoing.try_extend_from_slice(b"fontn ok\n").ok();
             }
+            else if m.as_str() == "wspr\n" {
+                outgoing.try_extend_from_slice(b"wspr ok\n").ok();
+                self.transmit = Transmit::WSPR;
+            }
             else if m.chars().nth(0).unwrap() == 'f' {
                 let mut as_str = ArrayString::<MESSAGE_LEN>::new();
 
@@ -220,7 +230,7 @@ impl USBData {
 
                 match u32::from_str_radix(as_str.as_str().trim(), 10) {
                     Ok(val) => {
-                        self.frequency = val;
+                        self.frequency = Some(val);
                         outgoing.try_extend_from_slice(b"f ok\n").ok();
                     }
                     _ => {
@@ -280,7 +290,14 @@ impl USBData {
         }
     }
 
-    pub fn is_transmit(&self) -> bool { self.transmit }
+    pub fn take_frequency(&mut self) -> Option<u32> { self.frequency.take() }
+
+    pub fn transmit(&self) -> Transmit { self.transmit }
+
+    pub fn clear_transmit(&mut self) {
+        self.send_message(b"WSPR done\n");
+        self.transmit = Transmit::None
+    }
 }
 
 #[allow(non_snake_case)]
-- 
cgit v1.2.3