Demo of low res colour vga video for stm32f3 discovery board
Dependencies: STM32F3-Discovery-minimal
Fork of Space_Invaders_Demo by
sys.c@16:915db2280bc4, 2019-04-01 (annotated)
- Committer:
- MartinJohnson
- Date:
- Mon Apr 01 02:30:54 2019 +0000
- Revision:
- 16:915db2280bc4
- Parent:
- 3:93e488fbb8a2
change fonts and update video code
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
MartinJohnson | 0:404dae88af71 | 1 | /*************************************************************************** |
MartinJohnson | 0:404dae88af71 | 2 | * STM32 VGA demo |
MartinJohnson | 0:404dae88af71 | 3 | * Copyright (C) 2012 Artekit Italy |
MartinJohnson | 0:404dae88af71 | 4 | * http://www.artekit.eu |
MartinJohnson | 0:404dae88af71 | 5 | * Written by Ruben H. Meleca |
MartinJohnson | 0:404dae88af71 | 6 | |
MartinJohnson | 0:404dae88af71 | 7 | ### sys.c |
MartinJohnson | 0:404dae88af71 | 8 | |
MartinJohnson | 0:404dae88af71 | 9 | # This program is free software; you can redistribute it and/or modify |
MartinJohnson | 0:404dae88af71 | 10 | # it under the terms of the GNU General Public License as published by |
MartinJohnson | 0:404dae88af71 | 11 | # the Free Software Foundation; either version 2 of the License, or |
MartinJohnson | 0:404dae88af71 | 12 | # (at your option) any later version. |
MartinJohnson | 0:404dae88af71 | 13 | # |
MartinJohnson | 0:404dae88af71 | 14 | # This program is distributed in the hope that it will be useful, |
MartinJohnson | 0:404dae88af71 | 15 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
MartinJohnson | 0:404dae88af71 | 16 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
MartinJohnson | 0:404dae88af71 | 17 | # GNU General Public License for more details. |
MartinJohnson | 0:404dae88af71 | 18 | # |
MartinJohnson | 0:404dae88af71 | 19 | # You should have received a copy of the GNU General Public License |
MartinJohnson | 0:404dae88af71 | 20 | # along with this program; if not, write to the Free Software |
MartinJohnson | 0:404dae88af71 | 21 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
MartinJohnson | 0:404dae88af71 | 22 | |
MartinJohnson | 0:404dae88af71 | 23 | ***************************************************************************/ |
MartinJohnson | 0:404dae88af71 | 24 | |
MartinJohnson | 0:404dae88af71 | 25 | #include "stm32f30x.h" |
MartinJohnson | 0:404dae88af71 | 26 | #include "sys.h" |
MartinJohnson | 0:404dae88af71 | 27 | |
MartinJohnson | 16:915db2280bc4 | 28 | volatile __attribute__ ((section ("ccmram_data"))) u32 sysTiming; |
MartinJohnson | 16:915db2280bc4 | 29 | volatile __attribute__ ((section ("ccmram_data"))) u32 sysTicks = 0; |
MartinJohnson | 0:404dae88af71 | 30 | //extern volatile sysTicks; |
MartinJohnson | 0:404dae88af71 | 31 | volatile u32 sysDel1Ms; |
MartinJohnson | 0:404dae88af71 | 32 | |
MartinJohnson | 0:404dae88af71 | 33 | //***************************************************************************** |
MartinJohnson | 0:404dae88af71 | 34 | // Function sysInitSystemTimer(void) |
MartinJohnson | 0:404dae88af71 | 35 | // |
MartinJohnson | 0:404dae88af71 | 36 | // Initialize system timer |
MartinJohnson | 0:404dae88af71 | 37 | // |
MartinJohnson | 0:404dae88af71 | 38 | // |
MartinJohnson | 0:404dae88af71 | 39 | // return 0=Fail, 1=OK |
MartinJohnson | 0:404dae88af71 | 40 | //***************************************************************************** |
MartinJohnson | 0:404dae88af71 | 41 | u8 sysInitSystemTimer(void) { |
MartinJohnson | 0:404dae88af71 | 42 | |
MartinJohnson | 0:404dae88af71 | 43 | if (SysTick_Config((SystemCoreClock / 1000) -1 )) { |
MartinJohnson | 0:404dae88af71 | 44 | return(0); |
MartinJohnson | 0:404dae88af71 | 45 | } |
MartinJohnson | 0:404dae88af71 | 46 | return(1); |
MartinJohnson | 0:404dae88af71 | 47 | } |
MartinJohnson | 0:404dae88af71 | 48 | |
MartinJohnson | 0:404dae88af71 | 49 | //***************************************************************************** |
MartinJohnson | 0:404dae88af71 | 50 | // Function sysDelay1Ms(void) |
MartinJohnson | 0:404dae88af71 | 51 | // |
MartinJohnson | 0:404dae88af71 | 52 | // Performs delay 1 milliseconds |
MartinJohnson | 0:404dae88af71 | 53 | // |
MartinJohnson | 0:404dae88af71 | 54 | // return None |
MartinJohnson | 0:404dae88af71 | 55 | //***************************************************************************** |
MartinJohnson | 0:404dae88af71 | 56 | __attribute__ ((section ("ccmram"))) |
MartinJohnson | 0:404dae88af71 | 57 | void sysDelay1Ms(void) { |
MartinJohnson | 0:404dae88af71 | 58 | |
MartinJohnson | 0:404dae88af71 | 59 | for (sysDel1Ms = 0; sysDel1Ms < 1000; sysDel1Ms++) { }; |
MartinJohnson | 0:404dae88af71 | 60 | } |
MartinJohnson | 0:404dae88af71 | 61 | |
MartinJohnson | 0:404dae88af71 | 62 | |
MartinJohnson | 0:404dae88af71 | 63 | //volatile pu16 __timer = (pu16) 0x40006c04; |
MartinJohnson | 0:404dae88af71 | 64 | |
MartinJohnson | 0:404dae88af71 | 65 | //***************************************************************************** |
MartinJohnson | 0:404dae88af71 | 66 | // Function sysDelayMs(u32 dly) |
MartinJohnson | 0:404dae88af71 | 67 | // |
MartinJohnson | 0:404dae88af71 | 68 | // Performs delay "dly" milliseconds |
MartinJohnson | 0:404dae88af71 | 69 | // |
MartinJohnson | 0:404dae88af71 | 70 | // parameters dly Delay value in milliseconds |
MartinJohnson | 0:404dae88af71 | 71 | // |
MartinJohnson | 0:404dae88af71 | 72 | // return None |
MartinJohnson | 0:404dae88af71 | 73 | //***************************************************************************** |
MartinJohnson | 0:404dae88af71 | 74 | __attribute__ ((section ("ccmram"))) |
MartinJohnson | 0:404dae88af71 | 75 | void sysDelayMs(u32 dly) { |
MartinJohnson | 0:404dae88af71 | 76 | |
MartinJohnson | 0:404dae88af71 | 77 | sysTiming = dly; |
MartinJohnson | 0:404dae88af71 | 78 | |
MartinJohnson | 3:93e488fbb8a2 | 79 | while (sysTiming > 0) ;//{__wfi();}; |
MartinJohnson | 0:404dae88af71 | 80 | |
MartinJohnson | 0:404dae88af71 | 81 | } |
MartinJohnson | 0:404dae88af71 | 82 | |
MartinJohnson | 0:404dae88af71 | 83 | //***************************************************************************** |
MartinJohnson | 0:404dae88af71 | 84 | // Function sysDelayMs(u32 dly) |
MartinJohnson | 0:404dae88af71 | 85 | // |
MartinJohnson | 0:404dae88af71 | 86 | // Performs delay "dly" milliseconds |
MartinJohnson | 0:404dae88af71 | 87 | // |
MartinJohnson | 0:404dae88af71 | 88 | // parameters dly Delay value in milliseconds |
MartinJohnson | 0:404dae88af71 | 89 | // |
MartinJohnson | 0:404dae88af71 | 90 | // return None |
MartinJohnson | 0:404dae88af71 | 91 | //***************************************************************************** |
MartinJohnson | 0:404dae88af71 | 92 | __attribute__ ((section ("ccmram"))) |
MartinJohnson | 0:404dae88af71 | 93 | void sysTickCount(void) { |
MartinJohnson | 0:404dae88af71 | 94 | |
MartinJohnson | 0:404dae88af71 | 95 | sysTicks++; |
MartinJohnson | 0:404dae88af71 | 96 | if (sysTiming > 0) --sysTiming; |
MartinJohnson | 0:404dae88af71 | 97 | } |
MartinJohnson | 0:404dae88af71 | 98 | |
MartinJohnson | 0:404dae88af71 | 99 | __attribute__ ((section ("ccmram"))) void SysTick_Handler(void) { |
MartinJohnson | 0:404dae88af71 | 100 | sysTicks++; |
MartinJohnson | 0:404dae88af71 | 101 | if (sysTiming > 0) --sysTiming; |
MartinJohnson | 0:404dae88af71 | 102 | } |
MartinJohnson | 0:404dae88af71 | 103 | |
MartinJohnson | 0:404dae88af71 | 104 |