AS7262 Add C++ explorer example

examples/breakout_as7262/CMakeLists.txt

@@ -1,16 +1,2 @@
-set(OUTPUT_NAME as7262_demo)
-
-add_executable(
-  ${OUTPUT_NAME}
-  demo.cpp
-)
-
-# enable usb output, disable uart output
-pico_enable_stdio_usb(${OUTPUT_NAME} 1)
-pico_enable_stdio_uart(${OUTPUT_NAME} 0)
-
-# Pull in pico libraries that we need
-target_link_libraries(${OUTPUT_NAME} pico_stdlib breakout_as7262)
-
-# create map/bin/hex file etc.
-pico_add_extra_outputs(${OUTPUT_NAME})
+include("${CMAKE_CURRENT_LIST_DIR}/basic_demo.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/explorer_bargraph.cmake")

examples/breakout_as7262/basic_demo.cmake

@@ -0,0 +1,16 @@
+set(OUTPUT_NAME as7262_basic_demo)
+
+add_executable(
+  ${OUTPUT_NAME}
+  basic_demo.cpp
+)
+
+# enable usb output, disable uart output
+pico_enable_stdio_usb(${OUTPUT_NAME} 1)
+pico_enable_stdio_uart(${OUTPUT_NAME} 0)
+
+# Pull in pico libraries that we need
+target_link_libraries(${OUTPUT_NAME} pico_stdlib breakout_as7262)
+
+# create map/bin/hex file etc.
+pico_add_extra_outputs(${OUTPUT_NAME})

examples/breakout_as7262/explorer_bargraph.cmake

@@ -0,0 +1,16 @@
+set(OUTPUT_NAME as7262_explorer_bargraph)
+
+add_executable(
+  ${OUTPUT_NAME}
+  explorer_bargraph.cpp
+)
+
+# enable usb output, disable uart output
+pico_enable_stdio_usb(${OUTPUT_NAME} 1)
+pico_enable_stdio_uart(${OUTPUT_NAME} 0)
+
+# Pull in pico libraries that we need
+target_link_libraries(${OUTPUT_NAME} pico_stdlib breakout_as7262 pico_explorer)
+
+# create map/bin/hex file etc.
+pico_add_extra_outputs(${OUTPUT_NAME})

examples/breakout_as7262/explorer_bargraph.cpp

@@ -0,0 +1,98 @@
+#include "pico/stdlib.h"
+
+#include "breakout_as7262.hpp"
+#include "pico_explorer.hpp"
+
+using namespace pimoroni;
+
+constexpr float INTEGRATION_TIME = 10.0f;
+
+BreakoutAS7262 as7262;
+uint16_t buffer[PicoExplorer::WIDTH * PicoExplorer::HEIGHT];
+PicoExplorer pico_explorer(buffer);
+
+uint8_t bar_width = PicoExplorer::WIDTH / 6;
+uint8_t bar_height = PicoExplorer::HEIGHT;
+
+void draw_bar(float scale, uint16_t channel) {
+  int16_t bar_top = bar_height - (bar_height * scale);
+  bar_top = std::max((int16_t)0, bar_top);
+  int16_t current_bar_height = bar_height - bar_top;
+  pico_explorer.rectangle(Rect(channel * bar_width, bar_top, bar_width, current_bar_height - 1));
+}
+
+int main() {
+  stdio_init_all();
+
+  pico_explorer.init();
+  as7262.init();
+
+  uint8_t dev_type = as7262.device_type();
+  uint8_t hw_version = as7262.hardware_version();
+
+  uint8_t major, minor, sub;
+  as7262.firmware_version(major, minor, sub);
+  printf("Device: %d, HW: %d, FW: %d.%d.%d\n", dev_type, hw_version, major, minor, sub);
+
+  as7262.set_gain(AS7262::gain::X64);
+  as7262.set_integration_time(INTEGRATION_TIME);
+  as7262.set_measurement_mode(AS7262::measurement_mode::cont_roygbr);
+  as7262.set_illumination_current(AS7262::illumination_current::ma12);
+  as7262.set_indicator_current(AS7262::indicator_current::ma4);
+  as7262.set_leds(true, true);
+
+  while(true) {
+    pico_explorer.set_pen(0, 0, 0);
+    pico_explorer.clear();
+
+    AS7262::reading reading = as7262.read();
+    printf("R: %f O: %f Y: %f G: %f B: %f V: %f \n",
+      reading.red,
+      reading.orange,
+      reading.yellow,
+      reading.green,
+      reading.blue,
+      reading.violet
+    );
+
+    float m = reading.red;
+    if(reading.orange > m) m = reading.orange;
+    if(reading.yellow > m) m = reading.yellow;
+    if(reading.green > m) m = reading.green;
+    if(reading.blue > m) m = reading.blue;
+    if(reading.violet > m) m = reading.violet;
+
+    pico_explorer.set_pen(0, 0, 0);
+    pico_explorer.clear();
+
+    // Red
+    pico_explorer.set_pen(255, 0, 0);
+    draw_bar(reading.red / m, 0);
+    
+    // Orange
+    pico_explorer.set_pen(255, 128, 0);
+    draw_bar(reading.orange / m, 1);
+
+    // Yellow
+    pico_explorer.set_pen(255, 255, 0);
+    draw_bar(reading.yellow / m, 2);
+
+    // Green
+    pico_explorer.set_pen(0, 255, 0);
+    draw_bar(reading.green / m, 3);
+
+    // Blue
+    pico_explorer.set_pen(0, 0, 255);
+    draw_bar(reading.blue / m, 4);
+
+    // Violet
+    pico_explorer.set_pen(255, 0, 255);
+    draw_bar(reading.violet / m, 5);
+
+    pico_explorer.update();
+
+    sleep_ms(INTEGRATION_TIME);
+  }
+
+  return 0;
+}