From ab1584d73fa095f0d2bc0aeb07c2a1754c6a77af Mon Sep 17 00:00:00 2001
From: folkert van heusden <mail@vanheusden.com>
Date: Thu, 17 Mar 2022 22:52:22 +0100
Subject: [PATCH] panel blinkenlights (poc with 1 neopixel)

---
 ESP32/main.ino       | 43 +++++++++++++++++++++++++++++++++++--------
 ESP32/platformio.ini |  1 +
 2 files changed, 36 insertions(+), 8 deletions(-)

diff --git a/ESP32/main.ino b/ESP32/main.ino
index d6c8924..4af7cab 100644
--- a/ESP32/main.ino
+++ b/ESP32/main.ino
@@ -1,5 +1,6 @@
 // (C) 2018-2022 by Folkert van Heusden
 // Released under Apache License v2.0
+#include <FastLED.h>
 #include <string.h>
 #include <unistd.h>
 
@@ -10,17 +11,17 @@
 #include "error.h"
 
 
-bus *b = nullptr;
-cpu *c = nullptr;
+#define NEOPIXELS_PIN	27
+bus *b    = nullptr;
+cpu *c    = nullptr;
 tty *tty_ = nullptr;
 
 uint16_t exec_addr = 0;
 
-uint32_t start_ts = 0;
+uint32_t start_ts  = 0;
 
-void setBootLoader(bus *const b)
-{
-	cpu *const c = b->getCpu();
+void setBootLoader(bus *const b) {
+	cpu     *const c      = b->getCpu();
 
 	const uint16_t offset = 01000;
 
@@ -41,6 +42,25 @@ void setBootLoader(bus *const b)
 
 	c->setRegister(7, offset);
 }
+
+void panel(void *p) {
+	bus *const b = reinterpret_cast<bus *>(p);
+	cpu *const c = b->getCpu();
+
+	CRGB leds[1];  // FIXME 1: aantal leds, zie ook v
+	FastLED.addLeds<NEOPIXEL, NEOPIXELS_PIN>(leds, 1);
+
+	for(;;) {
+		vTaskDelay(100 / portTICK_RATE_MS);
+
+		uint16_t current_pc = c->getPC();
+
+		leds[0] = current_pc & (1 << 5) ? CRGB::Red : CRGB::Black;
+
+		FastLED.show();
+	}
+}
+
 void setup() {
 	Serial.begin(115200);
 
@@ -49,10 +69,10 @@ void setup() {
 	Serial.print(F("Size of int: "));
 	Serial.println(sizeof(int));
 
-	Serial.print(F("CPU clock frequency: "));
+	Serial.print(F("CPU clock frequency (MHz): "));
 	Serial.println(getCpuFrequencyMhz());
 
-	Serial.print(F("Free RAM before init: "));
+	Serial.print(F("Free RAM before init (decimal bytes): "));
 	Serial.println(ESP.getFreeHeap());
 
 	Serial.println(F("Init bus"));
@@ -80,6 +100,13 @@ void setup() {
 
 	pinMode(LED_BUILTIN, OUTPUT);
 
+	Serial.flush();
+
+	Serial.print(F("Starting panel (on CPU 0, main emulator runs on CPU "));
+	Serial.print(xPortGetCoreID());
+	Serial.println(F(")"));
+	xTaskCreatePinnedToCore(&panel, "panel", 2048, b, 5, nullptr, 0);
+
 	Serial.println(F("Press <enter> to start"));
 
 	for(;;) {
diff --git a/ESP32/platformio.ini b/ESP32/platformio.ini
index 973b77f..f4f2b04 100644
--- a/ESP32/platformio.ini
+++ b/ESP32/platformio.ini
@@ -15,5 +15,6 @@ framework = arduino
 monitor_speed = 115200
 upload_speed = 1000000
 lib_deps = greiman/SdFat@^2.1.2
+	fastled/FastLED@^3.5.0
 build_flags = -std=c++14 -Ofast -DESP32=1
 build_unflags = -std=gnu++11 -Os