Jonne Valola / PokittoLib Featured

PokittoLib is the library needed for programming the Pokitto DIY game console (www.pokitto.com)

Dependents:   YATTT sd_map_test cPong SnowDemo ... more

PokittoLib

Library for programming Pokitto hardware

How to Use

  1. Import this library to online compiler (see button "import" on the right hand side
  2. DO NOT import mbed-src anymore, a better version is now included inside PokittoLib
  3. Change My_settings.h according to your project
  4. Start coding!

POKITTO_HW/PokittoClock.cpp@0:e8b8f36b4505, 2017-09-18 (annotated)

Committer:
Pokitto
Date:
Mon Sep 18 11:47:51 2017 +0000
Revision:
0:e8b8f36b4505
Initial;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Pokitto 0:e8b8f36b4505 1 /**************************************************************************/
Pokitto 0:e8b8f36b4505 2 /*!
Pokitto 0:e8b8f36b4505 3 @file PokittoClock.cpp
Pokitto 0:e8b8f36b4505 4 @author Jonne Valola
Pokitto 0:e8b8f36b4505 5
Pokitto 0:e8b8f36b4505 6 @section LICENSE
Pokitto 0:e8b8f36b4505 7
Pokitto 0:e8b8f36b4505 8 Software License Agreement (BSD License)
Pokitto 0:e8b8f36b4505 9
Pokitto 0:e8b8f36b4505 10 Copyright (c) 2015, Jonne Valola
Pokitto 0:e8b8f36b4505 11 All rights reserved.
Pokitto 0:e8b8f36b4505 12
Pokitto 0:e8b8f36b4505 13 Redistribution and use in source and binary forms, with or without
Pokitto 0:e8b8f36b4505 14 modification, are permitted provided that the following conditions are met:
Pokitto 0:e8b8f36b4505 15 1. Redistributions of source code must retain the above copyright
Pokitto 0:e8b8f36b4505 16 notice, this list of conditions and the following disclaimer.
Pokitto 0:e8b8f36b4505 17 2. Redistributions in binary form must reproduce the above copyright
Pokitto 0:e8b8f36b4505 18 notice, this list of conditions and the following disclaimer in the
Pokitto 0:e8b8f36b4505 19 documentation and/or other materials provided with the distribution.
Pokitto 0:e8b8f36b4505 20 3. Neither the name of the copyright holders nor the
Pokitto 0:e8b8f36b4505 21 names of its contributors may be used to endorse or promote products
Pokitto 0:e8b8f36b4505 22 derived from this software without specific prior written permission.
Pokitto 0:e8b8f36b4505 23
Pokitto 0:e8b8f36b4505 24 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
Pokitto 0:e8b8f36b4505 25 EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
Pokitto 0:e8b8f36b4505 26 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
Pokitto 0:e8b8f36b4505 27 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
Pokitto 0:e8b8f36b4505 28 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
Pokitto 0:e8b8f36b4505 29 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
Pokitto 0:e8b8f36b4505 30 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
Pokitto 0:e8b8f36b4505 31 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
Pokitto 0:e8b8f36b4505 32 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
Pokitto 0:e8b8f36b4505 33 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Pokitto 0:e8b8f36b4505 34 */
Pokitto 0:e8b8f36b4505 35 /**************************************************************************/
Pokitto 0:e8b8f36b4505 36
Pokitto 0:e8b8f36b4505 37 #include "PokittoCore.h"
Pokitto 0:e8b8f36b4505 38 #include "pinmap.h"
Pokitto 0:e8b8f36b4505 39 #include "HWLCD.h"
Pokitto 0:e8b8f36b4505 40 #include "Pokitto_settings.h"
Pokitto 0:e8b8f36b4505 41 #include "wait_api.h"
Pokitto 0:e8b8f36b4505 42
Pokitto 0:e8b8f36b4505 43 uint32_t pt_count=0;
Pokitto 0:e8b8f36b4505 44 uint32_t* ptimer;
Pokitto 0:e8b8f36b4505 45
Pokitto 0:e8b8f36b4505 46 extern "C" {
Pokitto 0:e8b8f36b4505 47 void SysTick_Handler(void) {
Pokitto 0:e8b8f36b4505 48 //interrupt happens when systick has counted down to zero
Pokitto 0:e8b8f36b4505 49 #if PROJ_GAMEBOY > 0
Pokitto 0:e8b8f36b4505 50 uint32_t a;
Pokitto 0:e8b8f36b4505 51 a = *ptimer;
Pokitto 0:e8b8f36b4505 52 *ptimer = a + 1;
Pokitto 0:e8b8f36b4505 53 #endif
Pokitto 0:e8b8f36b4505 54 pt_count+=10; // increment counter
Pokitto 0:e8b8f36b4505 55 }}
Pokitto 0:e8b8f36b4505 56
Pokitto 0:e8b8f36b4505 57 using namespace Pokitto;
Pokitto 0:e8b8f36b4505 58
Pokitto 0:e8b8f36b4505 59 uint32_t Core::refreshtime;
Pokitto 0:e8b8f36b4505 60
Pokitto 0:e8b8f36b4505 61 void Core::initClock() {
Pokitto 0:e8b8f36b4505 62 // to get 1000 interrupts per second the reload value should be 48000
Pokitto 0:e8b8f36b4505 63 #if PROJ_GAMEBOY > 0
Pokitto 0:e8b8f36b4505 64 ptimer = &pt_count;
Pokitto 0:e8b8f36b4505 65 SysTick->LOAD = 480000-1;
Pokitto 0:e8b8f36b4505 66 #else
Pokitto 0:e8b8f36b4505 67 SysTick->LOAD = 480000-1;
Pokitto 0:e8b8f36b4505 68 #endif
Pokitto 0:e8b8f36b4505 69 SysTick->VAL = 0;
Pokitto 0:e8b8f36b4505 70 SysTick->CTRL = 4 | 2 | 1; //CLKSOURCE=CPU clock | TICKINT | ENABLE
Pokitto 0:e8b8f36b4505 71 pt_count = 0;
Pokitto 0:e8b8f36b4505 72 }
Pokitto 0:e8b8f36b4505 73
Pokitto 0:e8b8f36b4505 74 uint32_t Core::getTime() {
Pokitto 0:e8b8f36b4505 75 return pt_count;
Pokitto 0:e8b8f36b4505 76 }
Pokitto 0:e8b8f36b4505 77
Pokitto 0:e8b8f36b4505 78 void Core::wait(uint16_t ms) {
Pokitto 0:e8b8f36b4505 79 wait_ms(ms);
Pokitto 0:e8b8f36b4505 80 }
Pokitto 0:e8b8f36b4505 81