DMBoard.cpp

00001 /*
00002  *  Copyright 2014 Embedded Artists AB
00003  *
00004  *  Licensed under the Apache License, Version 2.0 (the "License");
00005  *  you may not use this file except in compliance with the License.
00006  *  You may obtain a copy of the License at
00007  *
00008  *    http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  *  Unless required by applicable law or agreed to in writing, software
00011  *  distributed under the License is distributed on an "AS IS" BASIS,
00012  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  *  See the License for the specific language governing permissions and
00014  *  limitations under the License.
00015  */
00016 
00017 #include "mbed.h"
00018 #include "DMBoard.h"
00019 
00020 #if defined(DM_BOARD_USE_DISPLAY)
00021   #include "BiosDisplay.h"
00022 #endif
00023 #if defined(DM_BOARD_USE_TOUCH)
00024   #include "BiosTouch.h"
00025 #endif
00026 
00027 #if defined(DM_BOARD_ENABLE_MEASSURING_PINS)
00028   #include "meas.h"
00029 #endif      
00030 
00031 #include "dm_rtc.h"  
00032 
00033 /******************************************************************************
00034  * Configuration Compatibility Control
00035  *****************************************************************************/
00036 
00037 #if defined(DM_BOARD_USE_USB_DEVICE) && defined(DM_BOARD_USE_USB_HOST)
00038   #error The hardware supports either USB Device or USB Host - not both at the same time
00039 #endif
00040   
00041 #if defined(DM_BOARD_USE_USBSERIAL_IN_RTOSLOG) && !defined(DM_BOARD_USE_USB_DEVICE)
00042   #error Cannot use USBSerial in RtosLog without DM_BOARD_USE_USB_DEVICE
00043 #endif
00044 
00045 #if defined(DM_BOARD_USE_TOUCH) && !defined(DM_BOARD_USE_DISPLAY)
00046   #error Cannot have touch controller without a display!
00047 #endif
00048 
00049 /******************************************************************************
00050  * Defines and typedefs
00051  *****************************************************************************/
00052 
00053 #if defined(DM_BOARD_DISABLE_STANDARD_PRINTF)
00054 class DevNull : public Stream {
00055  
00056 public:
00057     DevNull(const char *name=NULL) : Stream(name) {}
00058  
00059 protected:
00060     virtual int _getc()      {return 0;}
00061     virtual int _putc(int c) {return c;}
00062 };
00063  
00064 static DevNull null("null");
00065 #endif
00066 
00067 
00068 /******************************************************************************
00069  * Local variables
00070  *****************************************************************************/
00071 
00072 /******************************************************************************
00073  * Private Functions
00074  *****************************************************************************/
00075 
00076 DMBoard::DMBoard() : 
00077     _initialized(false),
00078 #if defined(DM_BOARD_USE_MCI_FS)
00079     _mcifs(P4_16),
00080     _mciFatFs("mci"),
00081 #endif
00082 #if defined(DM_BOARD_USE_QSPI_FS)
00083     _qspifs("qspi"),
00084 #endif
00085     _buzzer(P1_5),
00086     _button(P2_10),
00087     _led1(LED1),
00088     _led2(LED2),
00089     _led3(LED3),
00090     _led4(LED4)
00091 {
00092 }
00093 
00094 DMBoard::~DMBoard()
00095 {
00096 }
00097 
00098 /******************************************************************************
00099  * Public Functions
00100  *****************************************************************************/
00101 
00102 DMBoard::BoardError DMBoard::init()
00103 {
00104   BoardError err = Ok;
00105   if (!_initialized) {
00106     do {
00107       
00108       /* 
00109        * By default mbed OS 5 comes with the MPU enabled and prevents execution
00110        * from RAM and writes to ROM. We need to be able to execute from EAM
00111        * (e.g. the BIOS functionality) and also write to ROM area (we are e.g.
00112        * using the EEPROM peripheral in the LPC4088 which has an address space
00113        * within the ROM area).
00114        */      
00115       mbed_mpu_manager_lock_ram_execution();
00116       mbed_mpu_manager_lock_rom_write();
00117       
00118       // Turn off the buzzer
00119       _buzzer.period_ms(1);
00120       _buzzer = 0;
00121       
00122       // Make sure the button is configured correctly
00123       _button.mode(PullUp);
00124     
00125       // Turn off all LEDs
00126       _led1 = 1;
00127       _led2 = 1;
00128       _led3 = 0;
00129       _led4 = 0;
00130         
00131       // Make sure that the logger is always initialized even if
00132       // other initialization tasks fail
00133       _logger.init();
00134         
00135 #if defined(DM_BOARD_ENABLE_MEASSURING_PINS)
00136       _INTERNAL_INIT_MEAS();
00137 #endif        
00138 
00139 #if defined(DM_BOARD_DISABLE_STANDARD_PRINTF)
00140       // Kill all ouput of calls to printf() so that there is no
00141       // simultaneous calls into the non-thread-safe standard libraries.
00142       // User code should use the RtosLogger anyway.
00143       freopen("/null", "w", stdout);
00144 #endif
00145 
00146 #if defined(DM_BOARD_USE_MCI_FS)
00147     _mciFatFs.mount(&_mcifs);
00148 #endif
00149 
00150 #if defined(DM_BOARD_USE_QSPI) || defined(DM_BOARD_USE_QSPI_FS)
00151       if (SPIFI::instance().init() != SPIFI::Ok) {
00152         err = SpifiError;
00153         break;
00154       }
00155 #endif
00156       
00157 #if defined(DM_BOARD_USE_DISPLAY)
00158       if (display()->init() != Display::DisplayError_Ok) {
00159         err = DisplayError;
00160         break;
00161       }
00162 #endif
00163       
00164 #if defined(DM_BOARD_USE_TOUCH)
00165       if (BiosTouch::instance().init() != TouchPanel::TouchError_Ok) {
00166         err = TouchError;
00167         break;
00168       }
00169 #endif
00170 
00171 #if defined(DM_BOARD_USE_REGISTRY)
00172       if (Registry::instance().load() != Registry::Ok) {
00173         err = RegistryError;
00174         break;
00175       }
00176 #endif
00177       /*
00178        * With mbed OS 5 the rtc driver in target/hal has been disabled
00179        * Adding an external rtc driver instead.
00180        */
00181       attach_rtc(&dm_read_rtc, &dm_write_rtc, &dm_init_rtc, &dm_isenabled_rtc);
00182 
00183       _initialized = true;
00184     } while(0);
00185   }
00186   return err;
00187 }
00188 
00189 void DMBoard::setLED(Leds led, bool on)
00190 {
00191   switch(led) {
00192     case Led1:
00193       _led1 = (on ? 0 : 1);
00194       break;
00195     case Led2:
00196       _led2 = (on ? 0 : 1);
00197       break;
00198     case Led3:
00199       _led3 = (on ? 1 : 0);
00200       break;
00201     case Led4:
00202       _led4 = (on ? 1 : 0);
00203       break;
00204   }
00205 }
00206 
00207 void DMBoard::buzzer(int frequency, int duration_ms)
00208 {
00209   if (frequency <= 0) {
00210     _buzzer = 0;
00211   } else {
00212     _buzzer.period_us(1000000/frequency);
00213     _buzzer = 0.5;
00214   }
00215   if (duration_ms > 0) {
00216     ThisThread::sleep_for(duration_ms);
00217     _buzzer = 0;
00218   }
00219 }
00220 
00221 bool DMBoard::buttonPressed()
00222 { 
00223   return _button.read() == 0;
00224 }
00225 
00226 TouchPanel* DMBoard::touchPanel()
00227 {
00228 #if defined(DM_BOARD_USE_TOUCH)
00229   if (BiosTouch::instance().isTouchSupported()) {
00230     return &BiosTouch::instance();
00231   }
00232 #endif
00233   return NULL;
00234 }
00235 
00236 Display* DMBoard::display()
00237 {
00238 #if defined(DM_BOARD_USE_DISPLAY)
00239   return &BiosDisplay::instance();
00240 #else
00241   return NULL;
00242 #endif
00243 }