rad1o: Don't update the UI during sweeps

Updating the UI during sweeps significantly increases the time needed to
complete a sweep. Instead simply show "SWEEP" on the display.

firmware/common/hackrf_ui.c

@@ -43,6 +43,7 @@ void hackrf_ui_set_first_if_frequency_null(const uint64_t frequency) { UNUSED(fr
 void hackrf_ui_set_filter_null(const rf_path_filter_t filter) { UNUSED(filter); }
 void hackrf_ui_set_antenna_bias_null(bool antenna_bias) { UNUSED(antenna_bias); }
 void hackrf_ui_set_clock_source_null(clock_source_t source) { UNUSED(source); }
+void hackrf_ui_set_transceiver_mode_null(transceiver_mode_t mode) { UNUSED(mode); }
 bool hackrf_ui_operacake_gpio_compatible_null(void) { return true; }
 
 /* Null UI function table, used if there's no hardware UI detected. Eliminates the
@@ -63,6 +64,7 @@ static const hackrf_ui_t hackrf_ui_null = {
 	&hackrf_ui_set_filter_null,
 	&hackrf_ui_set_antenna_bias_null,
 	&hackrf_ui_set_clock_source_null,
+	&hackrf_ui_set_transceiver_mode_null,
 	&hackrf_ui_operacake_gpio_compatible_null
 };
 

firmware/common/hackrf_ui.h

@@ -39,6 +39,7 @@ typedef void (*hackrf_ui_set_first_if_frequency_fn)(const uint64_t frequency);
 typedef void (*hackrf_ui_set_filter_fn)(const rf_path_filter_t filter);
 typedef void (*hackrf_ui_set_antenna_bias_fn)(bool antenna_bias);
 typedef void (*hackrf_ui_set_clock_source_fn)(clock_source_t source);
+typedef void (*hackrf_ui_set_transceiver_mode_fn)(transceiver_mode_t mode);
 typedef bool (*hackrf_ui_operacake_gpio_compatible_fn)(void);
 
 typedef struct {
@@ -56,6 +57,7 @@ typedef struct {
 	hackrf_ui_set_filter_fn set_filter;
 	hackrf_ui_set_antenna_bias_fn set_antenna_bias;
 	hackrf_ui_set_clock_source_fn set_clock_source;
+	hackrf_ui_set_transceiver_mode_fn set_transceiver_mode;
 	hackrf_ui_operacake_gpio_compatible_fn operacake_gpio_compatible;
 } hackrf_ui_t;
 

firmware/common/ui_portapack.c

@@ -554,6 +554,10 @@ static void portapack_ui_set_clock_source(clock_source_t source) {
 	portapack_lcd_draw_string(label_point, s);
 }
 
+static void portapack_ui_set_transceiver_mode(transceiver_mode_t mode) {
+	(void)mode;
+}
+
 static bool portapack_ui_operacake_gpio_compatible(void) {
 	return false;
 }
@@ -573,6 +577,7 @@ const hackrf_ui_t portapack_hackrf_ui = {
 	&portapack_ui_set_filter,
 	&portapack_ui_set_antenna_bias,
 	&portapack_ui_set_clock_source,
+	&portapack_ui_set_transceiver_mode,
 	&portapack_ui_operacake_gpio_compatible,
 };
 

firmware/common/ui_rad1o.c

@@ -38,6 +38,7 @@ static uint32_t bblna_gain = 0;
 static uint32_t bbvga_gain = 0;
 static uint32_t bbtxvga_gain = 0;
 static bool lna_on = false;
+static transceiver_mode_t trx_mode;
 static bool enabled = false;
 
 #define BLACK 0b00000000
@@ -129,7 +130,12 @@ static void ui_update(void)
     rad1o_drawHLine(11, 0, RESX - 1, WHITE);
 
     rad1o_lcdSetCrsr(2, 12);
-    draw_frequency();
+    if(trx_mode == TRANSCEIVER_MODE_RX_SWEEP) {
+        rad1o_setIntFont(&Font_Ubuntu18pt);
+        rad1o_lcdPrint("SWEEP");
+    } else {
+        draw_frequency();
+    }
 
     rad1o_drawHLine(40, 0, RESX - 1, WHITE);
 
@@ -216,7 +222,11 @@ static void rad1o_ui_deinit(void)
 static void rad1o_ui_set_frequency(uint64_t frequency)
 {
     freq = frequency;
-    ui_update();
+
+    if(TRANSCEIVER_MODE_RX_SWEEP == trx_mode) {
+    } else {
+        ui_update();
+    }
 }
 
 static void rad1o_ui_set_sample_rate(uint32_t _sample_rate)
@@ -281,6 +291,12 @@ static void rad1o_ui_set_clock_source(clock_source_t source __attribute__((unuse
     // Not implemented
 }
 
+static void rad1o_ui_set_transceiver_mode(transceiver_mode_t mode)
+{
+    trx_mode = mode;
+    ui_update();
+}
+
 static bool rad1o_ui_operacake_gpio_compatible(void)
 {
     return true;
@@ -301,6 +317,7 @@ static const hackrf_ui_t rad1o_ui = {
     &rad1o_ui_set_filter,
     &rad1o_ui_set_antenna_bias,
     &rad1o_ui_set_clock_source,
+    &rad1o_ui_set_transceiver_mode,
     &rad1o_ui_operacake_gpio_compatible,
 };
 

firmware/hackrf_usb/usb_api_transceiver.c

@@ -255,7 +255,9 @@ void set_transceiver_mode(const transceiver_mode_t new_transceiver_mode) {
 	usb_endpoint_flush(&usb_endpoint_bulk_out);
 
 	_transceiver_mode = new_transceiver_mode;
-	
+
+	hackrf_ui()->set_transceiver_mode(_transceiver_mode);
+
 	switch (_transceiver_mode) {
 	case TRANSCEIVER_MODE_RX_SWEEP:
 	case TRANSCEIVER_MODE_RX: