Frank 26080115
Date: March 20, 2011 This library is created from "LPC17xx CMSIS-Compliant Standard Peripheral Firmware Driver Library (GNU, Keil, IAR) (Jan 28, 2011)", available from NXP's website, under "All microcontrollers support documents" [[http://ics.nxp.com/support/documents/microcontrollers/?type=software]] You will need to follow [[/projects/libraries/svn/mbed/trunk/LPC1768/LPC17xx.h]] while using this library Examples provided here [[/users/frank26080115/programs/LPC1700CMSIS_Examples/]] The beautiful thing is that NXP does not place copyright protection on any of the files in here Only a few modifications are made to make it compile with the mbed online compiler, I fixed some warnings as well. This is untested as of March 20, 2011 Forum post about this library: [[/forum/mbed/topic/2030/]]
lpc17xx_rit.c@0:84d7747641aa, 2011-03-20 (annotated)
- Committer:
- frank26080115
- Date:
- Sun Mar 20 18:45:15 2011 +0000
- Revision:
- 0:84d7747641aa
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| frank26080115 | 0:84d7747641aa | 1 | /***********************************************************************//** |
| frank26080115 | 0:84d7747641aa | 2 | * @file lpc17xx_rit.c |
| frank26080115 | 0:84d7747641aa | 3 | * @brief Contains all functions support for RIT firmware library on LPC17xx |
| frank26080115 | 0:84d7747641aa | 4 | * @version 2.0 |
| frank26080115 | 0:84d7747641aa | 5 | * @date 21. May. 2010 |
| frank26080115 | 0:84d7747641aa | 6 | * @author NXP MCU SW Application Team |
| frank26080115 | 0:84d7747641aa | 7 | ************************************************************************** |
| frank26080115 | 0:84d7747641aa | 8 | * Software that is described herein is for illustrative purposes only |
| frank26080115 | 0:84d7747641aa | 9 | * which provides customers with programming information regarding the |
| frank26080115 | 0:84d7747641aa | 10 | * products. This software is supplied "AS IS" without any warranties. |
| frank26080115 | 0:84d7747641aa | 11 | * NXP Semiconductors assumes no responsibility or liability for the |
| frank26080115 | 0:84d7747641aa | 12 | * use of the software, conveys no license or title under any patent, |
| frank26080115 | 0:84d7747641aa | 13 | * copyright, or mask work right to the product. NXP Semiconductors |
| frank26080115 | 0:84d7747641aa | 14 | * reserves the right to make changes in the software without |
| frank26080115 | 0:84d7747641aa | 15 | * notification. NXP Semiconductors also make no representation or |
| frank26080115 | 0:84d7747641aa | 16 | * warranty that such application will be suitable for the specified |
| frank26080115 | 0:84d7747641aa | 17 | * use without further testing or modification. |
| frank26080115 | 0:84d7747641aa | 18 | **********************************************************************/ |
| frank26080115 | 0:84d7747641aa | 19 | |
| frank26080115 | 0:84d7747641aa | 20 | /* Peripheral group ----------------------------------------------------------- */ |
| frank26080115 | 0:84d7747641aa | 21 | /** @addtogroup RIT |
| frank26080115 | 0:84d7747641aa | 22 | * @{ |
| frank26080115 | 0:84d7747641aa | 23 | */ |
| frank26080115 | 0:84d7747641aa | 24 | |
| frank26080115 | 0:84d7747641aa | 25 | /* Includes ------------------------------------------------------------------- */ |
| frank26080115 | 0:84d7747641aa | 26 | #include "lpc17xx_rit.h" |
| frank26080115 | 0:84d7747641aa | 27 | #include "lpc17xx_clkpwr.h" |
| frank26080115 | 0:84d7747641aa | 28 | |
| frank26080115 | 0:84d7747641aa | 29 | /* If this source file built with example, the LPC17xx FW library configuration |
| frank26080115 | 0:84d7747641aa | 30 | * file in each example directory ("lpc17xx_libcfg.h") must be included, |
| frank26080115 | 0:84d7747641aa | 31 | * otherwise the default FW library configuration file must be included instead |
| frank26080115 | 0:84d7747641aa | 32 | */ |
| frank26080115 | 0:84d7747641aa | 33 | #ifdef __BUILD_WITH_EXAMPLE__ |
| frank26080115 | 0:84d7747641aa | 34 | #include "lpc17xx_libcfg.h" |
| frank26080115 | 0:84d7747641aa | 35 | #else |
| frank26080115 | 0:84d7747641aa | 36 | #include "lpc17xx_libcfg_default.h" |
| frank26080115 | 0:84d7747641aa | 37 | #endif /* __BUILD_WITH_EXAMPLE__ */ |
| frank26080115 | 0:84d7747641aa | 38 | |
| frank26080115 | 0:84d7747641aa | 39 | #ifdef _RIT |
| frank26080115 | 0:84d7747641aa | 40 | |
| frank26080115 | 0:84d7747641aa | 41 | /* Public Functions ----------------------------------------------------------- */ |
| frank26080115 | 0:84d7747641aa | 42 | /** @addtogroup RIT_Public_Functions |
| frank26080115 | 0:84d7747641aa | 43 | * @{ |
| frank26080115 | 0:84d7747641aa | 44 | */ |
| frank26080115 | 0:84d7747641aa | 45 | |
| frank26080115 | 0:84d7747641aa | 46 | /******************************************************************************//* |
| frank26080115 | 0:84d7747641aa | 47 | * @brief Initial for RIT |
| frank26080115 | 0:84d7747641aa | 48 | * - Turn on power and clock |
| frank26080115 | 0:84d7747641aa | 49 | * - Setup default register values |
| frank26080115 | 0:84d7747641aa | 50 | * @param[in] RITx is RIT peripheral selected, should be: LPC_RIT |
| frank26080115 | 0:84d7747641aa | 51 | * @return None |
| frank26080115 | 0:84d7747641aa | 52 | *******************************************************************************/ |
| frank26080115 | 0:84d7747641aa | 53 | void RIT_Init(LPC_RIT_TypeDef *RITx) |
| frank26080115 | 0:84d7747641aa | 54 | { |
| frank26080115 | 0:84d7747641aa | 55 | CHECK_PARAM(PARAM_RITx(RITx)); |
| frank26080115 | 0:84d7747641aa | 56 | CLKPWR_ConfigPPWR (CLKPWR_PCONP_PCRIT, ENABLE); |
| frank26080115 | 0:84d7747641aa | 57 | //Set up default register values |
| frank26080115 | 0:84d7747641aa | 58 | RITx->RICOMPVAL = 0xFFFFFFFF; |
| frank26080115 | 0:84d7747641aa | 59 | RITx->RIMASK = 0x00000000; |
| frank26080115 | 0:84d7747641aa | 60 | RITx->RICTRL = 0x0C; |
| frank26080115 | 0:84d7747641aa | 61 | RITx->RICOUNTER = 0x00000000; |
| frank26080115 | 0:84d7747641aa | 62 | // Turn on power and clock |
| frank26080115 | 0:84d7747641aa | 63 | |
| frank26080115 | 0:84d7747641aa | 64 | } |
| frank26080115 | 0:84d7747641aa | 65 | /******************************************************************************//* |
| frank26080115 | 0:84d7747641aa | 66 | * @brief DeInitial for RIT |
| frank26080115 | 0:84d7747641aa | 67 | * - Turn off power and clock |
| frank26080115 | 0:84d7747641aa | 68 | * - ReSetup default register values |
| frank26080115 | 0:84d7747641aa | 69 | * @param[in] RITx is RIT peripheral selected, should be: LPC_RIT |
| frank26080115 | 0:84d7747641aa | 70 | * @return None |
| frank26080115 | 0:84d7747641aa | 71 | *******************************************************************************/ |
| frank26080115 | 0:84d7747641aa | 72 | void RIT_DeInit(LPC_RIT_TypeDef *RITx) |
| frank26080115 | 0:84d7747641aa | 73 | { |
| frank26080115 | 0:84d7747641aa | 74 | CHECK_PARAM(PARAM_RITx(RITx)); |
| frank26080115 | 0:84d7747641aa | 75 | |
| frank26080115 | 0:84d7747641aa | 76 | // Turn off power and clock |
| frank26080115 | 0:84d7747641aa | 77 | CLKPWR_ConfigPPWR (CLKPWR_PCONP_PCRIT, DISABLE); |
| frank26080115 | 0:84d7747641aa | 78 | //ReSetup default register values |
| frank26080115 | 0:84d7747641aa | 79 | RITx->RICOMPVAL = 0xFFFFFFFF; |
| frank26080115 | 0:84d7747641aa | 80 | RITx->RIMASK = 0x00000000; |
| frank26080115 | 0:84d7747641aa | 81 | RITx->RICTRL = 0x0C; |
| frank26080115 | 0:84d7747641aa | 82 | RITx->RICOUNTER = 0x00000000; |
| frank26080115 | 0:84d7747641aa | 83 | } |
| frank26080115 | 0:84d7747641aa | 84 | |
| frank26080115 | 0:84d7747641aa | 85 | /******************************************************************************//* |
| frank26080115 | 0:84d7747641aa | 86 | * @brief Set compare value, mask value and time counter value |
| frank26080115 | 0:84d7747641aa | 87 | * @param[in] RITx is RIT peripheral selected, should be: LPC_RIT |
| frank26080115 | 0:84d7747641aa | 88 | * @param[in] time_interval: timer interval value (ms) |
| frank26080115 | 0:84d7747641aa | 89 | * @return None |
| frank26080115 | 0:84d7747641aa | 90 | *******************************************************************************/ |
| frank26080115 | 0:84d7747641aa | 91 | void RIT_TimerConfig(LPC_RIT_TypeDef *RITx, uint32_t time_interval) |
| frank26080115 | 0:84d7747641aa | 92 | { |
| frank26080115 | 0:84d7747641aa | 93 | uint32_t clock_rate, cmp_value; |
| frank26080115 | 0:84d7747641aa | 94 | CHECK_PARAM(PARAM_RITx(RITx)); |
| frank26080115 | 0:84d7747641aa | 95 | |
| frank26080115 | 0:84d7747641aa | 96 | // Get PCLK value of RIT |
| frank26080115 | 0:84d7747641aa | 97 | clock_rate = CLKPWR_GetPCLK(CLKPWR_PCLKSEL_RIT); |
| frank26080115 | 0:84d7747641aa | 98 | |
| frank26080115 | 0:84d7747641aa | 99 | /* calculate compare value for RIT to generate interrupt at |
| frank26080115 | 0:84d7747641aa | 100 | * specified time interval |
| frank26080115 | 0:84d7747641aa | 101 | * COMPVAL = (RIT_PCLK * time_interval)/1000 |
| frank26080115 | 0:84d7747641aa | 102 | * (with time_interval unit is millisecond) |
| frank26080115 | 0:84d7747641aa | 103 | */ |
| frank26080115 | 0:84d7747641aa | 104 | cmp_value = (clock_rate /1000) * time_interval; |
| frank26080115 | 0:84d7747641aa | 105 | RITx->RICOMPVAL = cmp_value; |
| frank26080115 | 0:84d7747641aa | 106 | |
| frank26080115 | 0:84d7747641aa | 107 | /* Set timer enable clear bit to clear timer to 0 whenever |
| frank26080115 | 0:84d7747641aa | 108 | * counter value equals the contents of RICOMPVAL |
| frank26080115 | 0:84d7747641aa | 109 | */ |
| frank26080115 | 0:84d7747641aa | 110 | RITx->RICTRL |= (1<<1); |
| frank26080115 | 0:84d7747641aa | 111 | } |
| frank26080115 | 0:84d7747641aa | 112 | |
| frank26080115 | 0:84d7747641aa | 113 | |
| frank26080115 | 0:84d7747641aa | 114 | /******************************************************************************//* |
| frank26080115 | 0:84d7747641aa | 115 | * @brief Enable/Disable Timer |
| frank26080115 | 0:84d7747641aa | 116 | * @param[in] RITx is RIT peripheral selected, should be: LPC_RIT |
| frank26080115 | 0:84d7747641aa | 117 | * @param[in] NewState New State of this function |
| frank26080115 | 0:84d7747641aa | 118 | * -ENABLE: Enable Timer |
| frank26080115 | 0:84d7747641aa | 119 | * -DISABLE: Disable Timer |
| frank26080115 | 0:84d7747641aa | 120 | * @return None |
| frank26080115 | 0:84d7747641aa | 121 | *******************************************************************************/ |
| frank26080115 | 0:84d7747641aa | 122 | void RIT_Cmd(LPC_RIT_TypeDef *RITx, FunctionalState NewState) |
| frank26080115 | 0:84d7747641aa | 123 | { |
| frank26080115 | 0:84d7747641aa | 124 | CHECK_PARAM(PARAM_RITx(RITx)); |
| frank26080115 | 0:84d7747641aa | 125 | CHECK_PARAM(PARAM_FUNCTIONALSTATE(NewState)); |
| frank26080115 | 0:84d7747641aa | 126 | |
| frank26080115 | 0:84d7747641aa | 127 | //Enable or Disable Timer |
| frank26080115 | 0:84d7747641aa | 128 | if(NewState==ENABLE) |
| frank26080115 | 0:84d7747641aa | 129 | { |
| frank26080115 | 0:84d7747641aa | 130 | RITx->RICTRL |= RIT_CTRL_TEN; |
| frank26080115 | 0:84d7747641aa | 131 | } |
| frank26080115 | 0:84d7747641aa | 132 | else |
| frank26080115 | 0:84d7747641aa | 133 | { |
| frank26080115 | 0:84d7747641aa | 134 | RITx->RICTRL &= ~RIT_CTRL_TEN; |
| frank26080115 | 0:84d7747641aa | 135 | } |
| frank26080115 | 0:84d7747641aa | 136 | } |
| frank26080115 | 0:84d7747641aa | 137 | |
| frank26080115 | 0:84d7747641aa | 138 | /******************************************************************************//* |
| frank26080115 | 0:84d7747641aa | 139 | * @brief Timer Enable/Disable on debug |
| frank26080115 | 0:84d7747641aa | 140 | * @param[in] RITx is RIT peripheral selected, should be: LPC_RIT |
| frank26080115 | 0:84d7747641aa | 141 | * @param[in] NewState New State of this function |
| frank26080115 | 0:84d7747641aa | 142 | * -ENABLE: The timer is halted whenever a hardware break condition occurs |
| frank26080115 | 0:84d7747641aa | 143 | * -DISABLE: Hardware break has no effect on the timer operation |
| frank26080115 | 0:84d7747641aa | 144 | * @return None |
| frank26080115 | 0:84d7747641aa | 145 | *******************************************************************************/ |
| frank26080115 | 0:84d7747641aa | 146 | void RIT_TimerDebugCmd(LPC_RIT_TypeDef *RITx, FunctionalState NewState) |
| frank26080115 | 0:84d7747641aa | 147 | { |
| frank26080115 | 0:84d7747641aa | 148 | CHECK_PARAM(PARAM_RITx(RITx)); |
| frank26080115 | 0:84d7747641aa | 149 | CHECK_PARAM(PARAM_FUNCTIONALSTATE(NewState)); |
| frank26080115 | 0:84d7747641aa | 150 | |
| frank26080115 | 0:84d7747641aa | 151 | //Timer Enable/Disable on break |
| frank26080115 | 0:84d7747641aa | 152 | if(NewState==ENABLE) |
| frank26080115 | 0:84d7747641aa | 153 | { |
| frank26080115 | 0:84d7747641aa | 154 | RITx->RICTRL |= RIT_CTRL_ENBR; |
| frank26080115 | 0:84d7747641aa | 155 | } |
| frank26080115 | 0:84d7747641aa | 156 | else |
| frank26080115 | 0:84d7747641aa | 157 | { |
| frank26080115 | 0:84d7747641aa | 158 | RITx->RICTRL &= ~RIT_CTRL_ENBR; |
| frank26080115 | 0:84d7747641aa | 159 | } |
| frank26080115 | 0:84d7747641aa | 160 | } |
| frank26080115 | 0:84d7747641aa | 161 | /******************************************************************************//* |
| frank26080115 | 0:84d7747641aa | 162 | * @brief Check whether interrupt flag is set or not |
| frank26080115 | 0:84d7747641aa | 163 | * @param[in] RITx is RIT peripheral selected, should be: LPC_RIT |
| frank26080115 | 0:84d7747641aa | 164 | * @return Current interrupt status, could be: SET/RESET |
| frank26080115 | 0:84d7747641aa | 165 | *******************************************************************************/ |
| frank26080115 | 0:84d7747641aa | 166 | IntStatus RIT_GetIntStatus(LPC_RIT_TypeDef *RITx) |
| frank26080115 | 0:84d7747641aa | 167 | { |
| frank26080115 | 0:84d7747641aa | 168 | uint8_t result; |
| frank26080115 | 0:84d7747641aa | 169 | CHECK_PARAM(PARAM_RITx(RITx)); |
| frank26080115 | 0:84d7747641aa | 170 | if((RITx->RICTRL&RIT_CTRL_INTEN)==1) result= SET; |
| frank26080115 | 0:84d7747641aa | 171 | else return RESET; |
| frank26080115 | 0:84d7747641aa | 172 | //clear interrupt flag |
| frank26080115 | 0:84d7747641aa | 173 | RITx->RICTRL |= RIT_CTRL_INTEN; |
| frank26080115 | 0:84d7747641aa | 174 | return (IntStatus)result; |
| frank26080115 | 0:84d7747641aa | 175 | } |
| frank26080115 | 0:84d7747641aa | 176 | |
| frank26080115 | 0:84d7747641aa | 177 | /** |
| frank26080115 | 0:84d7747641aa | 178 | * @} |
| frank26080115 | 0:84d7747641aa | 179 | */ |
| frank26080115 | 0:84d7747641aa | 180 | |
| frank26080115 | 0:84d7747641aa | 181 | #endif /* _RIT */ |
| frank26080115 | 0:84d7747641aa | 182 | |
| frank26080115 | 0:84d7747641aa | 183 | /** |
| frank26080115 | 0:84d7747641aa | 184 | * @} |
| frank26080115 | 0:84d7747641aa | 185 | */ |
| frank26080115 | 0:84d7747641aa | 186 | |
| frank26080115 | 0:84d7747641aa | 187 | /* --------------------------------- End Of File ------------------------------ */ |