From d67ad2c7ee085a1d85dd290c6f901076ec8e6543 Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <tridge@samba.org>
Date: Thu, 29 Aug 2013 13:31:55 +1000
Subject: [PATCH] AP_Notify: added missing files

---
 libraries/AP_Notify/ToshibaLED_I2C.cpp | 77 ++++++++++++++++++++++++++
 libraries/AP_Notify/ToshibaLED_I2C.h   | 27 +++++++++
 2 files changed, 104 insertions(+)
 create mode 100644 libraries/AP_Notify/ToshibaLED_I2C.cpp
 create mode 100644 libraries/AP_Notify/ToshibaLED_I2C.h

diff --git a/libraries/AP_Notify/ToshibaLED_I2C.cpp b/libraries/AP_Notify/ToshibaLED_I2C.cpp
new file mode 100644
index 0000000000..4b433edf60
--- /dev/null
+++ b/libraries/AP_Notify/ToshibaLED_I2C.cpp
@@ -0,0 +1,77 @@
+/*
+  ToshibaLED I2C driver
+*/
+/*
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <AP_HAL.h>
+#include "ToshibaLED.h"
+#include "ToshibaLED_I2C.h"
+
+extern const AP_HAL::HAL& hal;
+
+#define TOSHIBA_LED_ADDRESS 0x55    // default I2C bus address
+#define TOSHIBA_LED_PWM0    0x01    // pwm0 register
+#define TOSHIBA_LED_PWM1    0x02    // pwm1 register
+#define TOSHIBA_LED_PWM2    0x03    // pwm2 register
+#define TOSHIBA_LED_ENABLE  0x04    // enable register
+
+bool ToshibaLED_I2C::hw_init()
+{
+    // get pointer to i2c bus semaphore
+    AP_HAL::Semaphore* i2c_sem = hal.i2c->get_semaphore();
+
+    // take i2c bus sempahore
+    if (!i2c_sem->take(HAL_SEMAPHORE_BLOCK_FOREVER)) {
+        return false;
+    }
+
+    // enable the led
+    bool ret = (hal.i2c->writeRegister(TOSHIBA_LED_ADDRESS, TOSHIBA_LED_ENABLE, 0x03) == 0);
+
+    // update the red, green and blue values to zero
+    ret &= (hal.i2c->writeRegister(TOSHIBA_LED_ADDRESS, TOSHIBA_LED_PWM0, TOSHIBA_LED_OFF) == 0);
+    ret &= (hal.i2c->writeRegister(TOSHIBA_LED_ADDRESS, TOSHIBA_LED_PWM1, TOSHIBA_LED_OFF) == 0);
+    ret &= (hal.i2c->writeRegister(TOSHIBA_LED_ADDRESS, TOSHIBA_LED_PWM2, TOSHIBA_LED_OFF) == 0);
+
+    // give back i2c semaphore
+    i2c_sem->give();
+
+    return ret;
+}
+
+// set_rgb - set color as a combination of red, green and blue values
+bool ToshibaLED_I2C::hw_set_rgb(uint8_t red, uint8_t green, uint8_t blue)
+{
+    // get pointer to i2c bus semaphore
+    AP_HAL::Semaphore* i2c_sem = hal.i2c->get_semaphore();
+
+    // exit immediately if we can't take the semaphore
+    if (i2c_sem == NULL || !i2c_sem->take(5)) {
+        return false;
+    }
+
+    bool success = true;
+    // update the red value
+    success &= (hal.i2c->writeRegister(TOSHIBA_LED_ADDRESS, TOSHIBA_LED_PWM2, red>>4) == 0);
+    // update the green value
+    success &= (hal.i2c->writeRegister(TOSHIBA_LED_ADDRESS, TOSHIBA_LED_PWM1, green>>4) == 0);
+    // update the blue value
+    success &= (hal.i2c->writeRegister(TOSHIBA_LED_ADDRESS, TOSHIBA_LED_PWM0, blue>>4) == 0);
+
+    // give back i2c semaphore
+    i2c_sem->give();
+    return success;
+}
diff --git a/libraries/AP_Notify/ToshibaLED_I2C.h b/libraries/AP_Notify/ToshibaLED_I2C.h
new file mode 100644
index 0000000000..02f6793363
--- /dev/null
+++ b/libraries/AP_Notify/ToshibaLED_I2C.h
@@ -0,0 +1,27 @@
+/*
+   ToshibaLED I2C driver
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef __TOSHIBA_LED_I2C_H__
+#define __TOSHIBA_LED_I2C_H__
+
+class ToshibaLED_I2C : public ToshibaLED
+{
+public:
+    bool hw_init(void);
+    bool hw_set_rgb(uint8_t r, uint8_t g, uint8_t b);
+};
+
+#endif // __TOSHIBA_LED_I2C_H__