From a038463097e1c047f21f4c270da08559c75842a9 Mon Sep 17 00:00:00 2001
From: bsx <bsx+ccc@0xcafec0.de>
Date: Fri, 16 Dec 2011 22:09:09 +0100
Subject: [PATCH] added rgb-flame code

---
 firmware/applications/final/flame_rgb.c | 177 ++++++++++++++++++++++++
 1 file changed, 177 insertions(+)
 create mode 100644 firmware/applications/final/flame_rgb.c

diff --git a/firmware/applications/final/flame_rgb.c b/firmware/applications/final/flame_rgb.c
new file mode 100644
index 0000000..100495a
--- /dev/null
+++ b/firmware/applications/final/flame_rgb.c
@@ -0,0 +1,177 @@
+/*
+
+    flame m0dul with RGB (rev c) - https://github.com/schneider42/flame
+    LED driver is a PCA9633
+*/
+
+#include "basic/basic.h"
+#include "core/i2c/i2c.h"
+#include "basic/config.h"
+#include "basic/xxtea.h"
+
+#define FLAME_I2C_WRITE         0xC6
+#define FLAME_I2C_READ          0xC7
+
+#define FLAME_I2C_CR_MODE1      0x00
+#define FLAME_I2C_CR_MODE2      0x01
+#define FLAME_I2C_CR_PWM0       0x02
+#define FLAME_I2C_CR_PWM1       0x03
+#define FLAME_I2C_CR_PWM2       0x04
+#define FLAME_I2C_CR_PWM3       0x05
+#define FLAME_I2C_CR_GRPPWM     0x06
+#define FLAME_I2C_CR_GRPFREQ    0x07
+#define FLAME_I2C_CR_LEDOUT     0x08
+
+#define FLAME_I2C_LED0_OFF      0x00
+#define FLAME_I2C_LED0_FULL     0x01
+#define FLAME_I2C_LED0_INDY     0x02
+#define FLAME_I2C_LED0_GRP      0x03
+#define FLAME_I2C_LED1_OFF      0x00
+#define FLAME_I2C_LED1_FULL     0x04
+#define FLAME_I2C_LED1_INDY     0x08
+#define FLAME_I2C_LED1_GRP      0x0c
+#define FLAME_I2C_LED2_OFF      0x00
+#define FLAME_I2C_LED2_FULL     0x10
+#define FLAME_I2C_LED2_INDY     0x20
+#define FLAME_I2C_LED2_GRP      0x30
+#define FLAME_I2C_LED3_OFF      0x00
+#define FLAME_I2C_LED3_FULL     0x40
+#define FLAME_I2C_LED3_INDY     0x80
+#define FLAME_I2C_LED3_GRP      0xC0
+
+#define FLAME_OFF               0x00
+#define FLAME_UP                0x01
+#define FLAME_UP_WAIT           0x02
+#define FLAME_DOWN              0x03
+#define FLAME_DOWN_WAIT         0x04
+
+/**************************************************************************/
+
+#define flameBrightnessMax GLOBAL(flamemax)
+#define flameBrightnessMin GLOBAL(flamemin)
+#define flameSpeedUp       GLOBAL(flamespeed)
+#define flameSpeedDown     GLOBAL(flamespeed)
+#define flameWaitUp        GLOBAL(flamemaxw)
+#define flameWaitDown      GLOBAL(flameminw)
+
+#define nick               GLOBAL(nickname)
+
+uint32_t flameRGBSetI2C(uint8_t cr, uint8_t value) {
+    I2CMasterBuffer[0] = FLAME_I2C_WRITE;
+    I2CMasterBuffer[1] = cr;
+    I2CMasterBuffer[2] = value;
+    I2CWriteLength = 3;
+    I2CReadLength = 0;
+    return i2cEngine();
+}
+
+uint8_t flameRGBEnabled = 0;
+uint8_t flameRGBMode = FLAME_OFF;
+uint8_t flameRGBI2Cpwm = 0;
+uint8_t flameRGBTicks = 0;
+
+void setFlameRGBPWM() {
+    flameRGBSetI2C(FLAME_I2C_CR_GRPPWM, flameRGBI2Cpwm); // set pwm
+}
+
+void setFlameRGBColor() {
+    // generate a hash from the nickname
+    uint32_t hash[4];
+    uint32_t const key[4] = {0xcfd97ebc, 0x21117b45, 0x7193727, 0xa336f4d6};
+    xxtea_cbcmac(hash, (uint32_t *)nick, 4, key);
+    // set color, LED0 = red, LED1 = unused, LED2 = blue, LED3 = green
+    flameRGBSetI2C(FLAME_I2C_CR_PWM0, hash[0] % 255);
+    flameRGBSetI2C(FLAME_I2C_CR_PWM1, hash[1] % 255);
+    flameRGBSetI2C(FLAME_I2C_CR_PWM2, hash[2] % 255);
+    flameRGBSetI2C(FLAME_I2C_CR_PWM3, hash[3] % 255);
+}
+
+void tick_flame_rgb(void) { // every 10ms
+    static char night=0;
+
+    if (!flameRGBEnabled) {
+        return;
+    }
+
+    if (night != isNight()) {
+        night = isNight();
+        if (!night) {
+            flameRGBMode = FLAME_OFF;
+            flameRGBI2Cpwm = 0;
+            push_queue(&setFlameRGBPWM);
+        };
+    };
+
+    flameRGBTicks++;
+
+    if (flameRGBI2Cpwm > flameBrightnessMax) {
+        flameRGBI2Cpwm = flameBrightnessMax;
+    }
+    if (flameRGBI2Cpwm < flameBrightnessMin) {
+        flameRGBI2Cpwm = flameBrightnessMin;
+    }
+
+    if (flameRGBMode == FLAME_OFF) {
+        if (isNight()) {
+            flameRGBTicks = 0;
+            flameRGBMode = FLAME_UP;
+        }
+    }
+
+    if (flameRGBMode == FLAME_UP) {
+        if (0xFF - flameRGBI2Cpwm >= flameSpeedUp ) {
+            flameRGBI2Cpwm += flameSpeedUp;
+        } else {
+            flameRGBI2Cpwm = 0xFF;
+        }
+        push_queue(&setFlameRGBPWM);
+        if (flameRGBI2Cpwm >= flameBrightnessMax) {
+            flameRGBMode = FLAME_UP_WAIT;
+            flameRGBTicks = 0;
+        }
+    }
+
+    if (flameRGBMode == FLAME_UP_WAIT) {
+        if (flameRGBTicks >= flameWaitUp) {
+            flameRGBMode = FLAME_DOWN;
+        }
+    }
+
+    if (flameRGBMode == FLAME_DOWN) {
+        if (flameSpeedDown <= flameRGBI2Cpwm) {
+            flameRGBI2Cpwm -= flameSpeedDown;
+        } else {
+            flameRGBI2Cpwm = 0x00;
+        }
+        push_queue(&setFlameRGBPWM);
+        if (flameRGBI2Cpwm <= flameBrightnessMin) {
+            flameRGBMode = FLAME_DOWN_WAIT;
+            flameRGBTicks = 0;
+        }
+    }
+
+    if (flameRGBMode == FLAME_DOWN_WAIT) {
+        if (flameRGBTicks >= flameWaitDown) {
+            flameRGBMode = FLAME_OFF;
+        }
+    }
+}
+
+void init_flame_rgb(void) {
+    i2cInit(I2CMASTER); // Init I2C
+
+    flameRGBEnabled = (flameRGBSetI2C(FLAME_I2C_CR_MODE1, 0x00) == I2CSTATE_ACK); // probe i2c and enable flame if present
+
+    if (!flameRGBEnabled)
+        return;
+
+    // enable individual PWN and group PWN for LED0, LED3 and LED2 and disable LED1
+    flameRGBSetI2C(FLAME_I2C_CR_LEDOUT, FLAME_I2C_LED0_GRP | FLAME_I2C_LED1_OFF | FLAME_I2C_LED2_GRP | FLAME_I2C_LED3_GRP);
+
+    flameRGBSetI2C(FLAME_I2C_CR_GRPPWM, 0x00); // overall dimming
+
+    push_queue(&setFlameRGBColor);
+
+    enableConfig(CFG_TYPE_FLAME,1);
+}
+