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
- Import this library to online compiler (see button "import" on the right hand side
- DO NOT import mbed-src anymore, a better version is now included inside PokittoLib
- Change My_settings.h according to your project
- Start coding!
Diff: POKITTO_HW/timer_11u6x.c
- Revision:
- 30:796f9611d2ac
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/POKITTO_HW/timer_11u6x.c Tue Jan 30 10:41:12 2018 +0000 @@ -0,0 +1,132 @@ +/* + * @brief LPC11u6x 16/32-bit Timer/PWM control functions + * + * @note + * Copyright(C) NXP Semiconductors, 2013 + * All rights reserved. + * + * @par + * Software that is described herein is for illustrative purposes only + * which provides customers with programming information regarding the + * LPC products. This software is supplied "AS IS" without any warranties of + * any kind, and NXP Semiconductors and its licensor disclaim any and + * all warranties, express or implied, including all implied warranties of + * merchantability, fitness for a particular purpose and non-infringement of + * intellectual property rights. NXP Semiconductors assumes no responsibility + * or liability for the use of the software, conveys no license or rights under any + * patent, copyright, mask work right, or any other intellectual property rights in + * or to any products. NXP Semiconductors reserves the right to make changes + * in the software without notification. NXP Semiconductors also makes no + * representation or warranty that such application will be suitable for the + * specified use without further testing or modification. + * + * @par + * Permission to use, copy, modify, and distribute this software and its + * documentation is hereby granted, under NXP Semiconductors' and its + * licensor's relevant copyrights in the software, without fee, provided that it + * is used in conjunction with NXP Semiconductors microcontrollers. This + * copyright, permission, and disclaimer notice must appear in all copies of + * this code. + */ + +//#include "chip.h" +//#include "lpc_defs.h" +#include "timer_11u6x.h" +#include "clock_11u6x.h" + +/* System oscillator rate and RTC oscillator rate */ +const uint32_t OscRateIn = 12000000; +const uint32_t RTCOscRateIn = 32768; + + +/***************************************************************************** + * Private types/enumerations/variables + ****************************************************************************/ + +/***************************************************************************** + * Public types/enumerations/variables + ****************************************************************************/ + +/***************************************************************************** + * Private functions + ****************************************************************************/ + +/* Static data/function define */ +#define STATIC static +/* External data/function define */ +#define EXTERN extern + + + + +/* Returns clock index for a specific timer referenced by IP block address */ +STATIC CHIP_SYSCTL_CLOCK_T Chip_TIMER_GetClock(LPC_TIMER_T *pTMR) +{ + CHIP_SYSCTL_CLOCK_T tmrClk; + if (pTMR == LPC_TIMER32_1) { + tmrClk = SYSCTL_CLOCK_CT32B1; + } + else if (pTMR == LPC_TIMER16_0) { + tmrClk = SYSCTL_CLOCK_CT16B0; + } + else if (pTMR == LPC_TIMER16_1) { + tmrClk = SYSCTL_CLOCK_CT16B1; + } + else { + tmrClk = SYSCTL_CLOCK_CT32B0; + } + + return tmrClk; +} + +/***************************************************************************** + * Public functions + ****************************************************************************/ + +/* Initialize a timer */ +void Chip_TIMER_Init(LPC_TIMER_T *pTMR) +{ + Chip_Clock_EnablePeriphClock(Chip_TIMER_GetClock(pTMR)); +} + +/* Shutdown a timer */ +void Chip_TIMER_DeInit(LPC_TIMER_T *pTMR) +{ + Chip_Clock_DisablePeriphClock(Chip_TIMER_GetClock(pTMR)); +} + +/* Resets the timer terminal and prescale counts to 0 */ +void Chip_TIMER_Reset(LPC_TIMER_T *pTMR) +{ + uint32_t reg; + + /* Disable timer, set terminal count to non-0 */ + reg = pTMR->TCR; + pTMR->TCR = 0; + pTMR->TC = 1; + + /* Reset timer counter */ + pTMR->TCR = TIMER_RESET; + + /* Wait for terminal count to clear */ + while (pTMR->TC != 0) {} + + /* Restore timer state */ + pTMR->TCR = reg; +} + +/* Sets external match control (MATn.matchnum) pin control */ +void Chip_TIMER_ExtMatchControlSet(LPC_TIMER_T *pTMR, int8_t initial_state, + TIMER_PIN_MATCH_STATE_T matchState, int8_t matchnum) +{ + uint32_t mask, reg; + + /* Clear bits corresponding to selected match register */ + mask = (1 << matchnum) | (0x03 << (4 + (matchnum * 2))); + reg = pTMR->EMR &= ~mask; + + /* Set new configuration for selected match register */ + pTMR->EMR = reg | (((uint32_t) initial_state) << matchnum) | + (((uint32_t) matchState) << (4 + (matchnum * 2))); +} +