added prescaler for 16 bit pwm in LPC1347 target
Fork of mbed-dev by
targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/emlib/src/em_acmp.c@50:a417edff4437, 2016-01-15 (annotated)
- Committer:
- mbed_official
- Date:
- Fri Jan 15 07:45:16 2016 +0000
- Revision:
- 50:a417edff4437
- Parent:
- 0:9b334a45a8ff
- Child:
- 144:ef7eb2e8f9f7
Synchronized with git revision 6010f32619bfcbb01cc73747d4ff9040863482d9
Full URL: https://github.com/mbedmicro/mbed/commit/6010f32619bfcbb01cc73747d4ff9040863482d9/
Remove doubling of buffer size in realiseEndpoint()
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
bogdanm | 0:9b334a45a8ff | 1 | /***************************************************************************//** |
bogdanm | 0:9b334a45a8ff | 2 | * @file em_acmp.c |
bogdanm | 0:9b334a45a8ff | 3 | * @brief Analog Comparator (ACMP) Peripheral API |
mbed_official | 50:a417edff4437 | 4 | * @version 4.2.1 |
bogdanm | 0:9b334a45a8ff | 5 | ******************************************************************************* |
bogdanm | 0:9b334a45a8ff | 6 | * @section License |
mbed_official | 50:a417edff4437 | 7 | * <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b> |
bogdanm | 0:9b334a45a8ff | 8 | ******************************************************************************* |
bogdanm | 0:9b334a45a8ff | 9 | * |
bogdanm | 0:9b334a45a8ff | 10 | * Permission is granted to anyone to use this software for any purpose, |
bogdanm | 0:9b334a45a8ff | 11 | * including commercial applications, and to alter it and redistribute it |
bogdanm | 0:9b334a45a8ff | 12 | * freely, subject to the following restrictions: |
bogdanm | 0:9b334a45a8ff | 13 | * |
bogdanm | 0:9b334a45a8ff | 14 | * 1. The origin of this software must not be misrepresented; you must not |
bogdanm | 0:9b334a45a8ff | 15 | * claim that you wrote the original software. |
bogdanm | 0:9b334a45a8ff | 16 | * 2. Altered source versions must be plainly marked as such, and must not be |
bogdanm | 0:9b334a45a8ff | 17 | * misrepresented as being the original software. |
bogdanm | 0:9b334a45a8ff | 18 | * 3. This notice may not be removed or altered from any source distribution. |
bogdanm | 0:9b334a45a8ff | 19 | * |
bogdanm | 0:9b334a45a8ff | 20 | * DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Silicon Labs has no |
bogdanm | 0:9b334a45a8ff | 21 | * obligation to support this Software. Silicon Labs is providing the |
bogdanm | 0:9b334a45a8ff | 22 | * Software "AS IS", with no express or implied warranties of any kind, |
bogdanm | 0:9b334a45a8ff | 23 | * including, but not limited to, any implied warranties of merchantability |
bogdanm | 0:9b334a45a8ff | 24 | * or fitness for any particular purpose or warranties against infringement |
bogdanm | 0:9b334a45a8ff | 25 | * of any proprietary rights of a third party. |
bogdanm | 0:9b334a45a8ff | 26 | * |
bogdanm | 0:9b334a45a8ff | 27 | * Silicon Labs will not be liable for any consequential, incidental, or |
bogdanm | 0:9b334a45a8ff | 28 | * special damages, or any other relief, or for any claim by any third party, |
bogdanm | 0:9b334a45a8ff | 29 | * arising from your use of this Software. |
bogdanm | 0:9b334a45a8ff | 30 | * |
bogdanm | 0:9b334a45a8ff | 31 | ******************************************************************************/ |
bogdanm | 0:9b334a45a8ff | 32 | |
bogdanm | 0:9b334a45a8ff | 33 | |
bogdanm | 0:9b334a45a8ff | 34 | #include "em_acmp.h" |
bogdanm | 0:9b334a45a8ff | 35 | #if defined(ACMP_COUNT) && (ACMP_COUNT > 0) |
bogdanm | 0:9b334a45a8ff | 36 | |
bogdanm | 0:9b334a45a8ff | 37 | #include <stdbool.h> |
mbed_official | 50:a417edff4437 | 38 | #include "em_bus.h" |
bogdanm | 0:9b334a45a8ff | 39 | #include "em_assert.h" |
bogdanm | 0:9b334a45a8ff | 40 | |
bogdanm | 0:9b334a45a8ff | 41 | /***************************************************************************//** |
bogdanm | 0:9b334a45a8ff | 42 | * @addtogroup EM_Library |
bogdanm | 0:9b334a45a8ff | 43 | * @{ |
bogdanm | 0:9b334a45a8ff | 44 | ******************************************************************************/ |
bogdanm | 0:9b334a45a8ff | 45 | |
bogdanm | 0:9b334a45a8ff | 46 | /***************************************************************************//** |
bogdanm | 0:9b334a45a8ff | 47 | * @addtogroup ACMP |
bogdanm | 0:9b334a45a8ff | 48 | * @brief Analog comparator (ACMP) Peripheral API |
bogdanm | 0:9b334a45a8ff | 49 | * @{ |
bogdanm | 0:9b334a45a8ff | 50 | ******************************************************************************/ |
bogdanm | 0:9b334a45a8ff | 51 | |
bogdanm | 0:9b334a45a8ff | 52 | /******************************************************************************* |
bogdanm | 0:9b334a45a8ff | 53 | ******************************* DEFINES *********************************** |
bogdanm | 0:9b334a45a8ff | 54 | ******************************************************************************/ |
bogdanm | 0:9b334a45a8ff | 55 | |
bogdanm | 0:9b334a45a8ff | 56 | /** @cond DO_NOT_INCLUDE_WITH_DOXYGEN */ |
bogdanm | 0:9b334a45a8ff | 57 | |
bogdanm | 0:9b334a45a8ff | 58 | |
bogdanm | 0:9b334a45a8ff | 59 | /** Validation of ACMP register block pointer reference |
bogdanm | 0:9b334a45a8ff | 60 | * for assert statements. */ |
bogdanm | 0:9b334a45a8ff | 61 | #if (ACMP_COUNT == 1) |
bogdanm | 0:9b334a45a8ff | 62 | #define ACMP_REF_VALID(ref) ((ref) == ACMP0) |
bogdanm | 0:9b334a45a8ff | 63 | #elif (ACMP_COUNT == 2) |
bogdanm | 0:9b334a45a8ff | 64 | #define ACMP_REF_VALID(ref) (((ref) == ACMP0) || ((ref) == ACMP1)) |
bogdanm | 0:9b334a45a8ff | 65 | #else |
bogdanm | 0:9b334a45a8ff | 66 | #error Undefined number of analog comparators (ACMP). |
bogdanm | 0:9b334a45a8ff | 67 | #endif |
bogdanm | 0:9b334a45a8ff | 68 | |
mbed_official | 50:a417edff4437 | 69 | /** The maximum value that can be inserted in the route location register |
mbed_official | 50:a417edff4437 | 70 | * for the specific device. */ |
mbed_official | 50:a417edff4437 | 71 | #if defined(_ACMP_ROUTE_LOCATION_LOC3) |
mbed_official | 50:a417edff4437 | 72 | #define _ACMP_ROUTE_LOCATION_MAX _ACMP_ROUTE_LOCATION_LOC3 |
mbed_official | 50:a417edff4437 | 73 | #elif defined(_ACMP_ROUTE_LOCATION_LOC2) |
mbed_official | 50:a417edff4437 | 74 | #define _ACMP_ROUTE_LOCATION_MAX _ACMP_ROUTE_LOCATION_LOC2 |
mbed_official | 50:a417edff4437 | 75 | #elif defined(_ACMP_ROUTE_LOCATION_LOC1) |
mbed_official | 50:a417edff4437 | 76 | #define _ACMP_ROUTE_LOCATION_MAX _ACMP_ROUTE_LOCATION_LOC1 |
mbed_official | 50:a417edff4437 | 77 | #elif defined(_ACMP_ROUTELOC0_OUTLOC_LOC31) |
mbed_official | 50:a417edff4437 | 78 | #define _ACMP_ROUTE_LOCATION_MAX _ACMP_ROUTELOC0_OUTLOC_LOC31 |
mbed_official | 50:a417edff4437 | 79 | #else |
mbed_official | 50:a417edff4437 | 80 | #error Undefined max route locations |
mbed_official | 50:a417edff4437 | 81 | #endif |
mbed_official | 50:a417edff4437 | 82 | |
bogdanm | 0:9b334a45a8ff | 83 | /** @endcond */ |
bogdanm | 0:9b334a45a8ff | 84 | |
bogdanm | 0:9b334a45a8ff | 85 | /******************************************************************************* |
bogdanm | 0:9b334a45a8ff | 86 | ************************** GLOBAL FUNCTIONS ******************************* |
bogdanm | 0:9b334a45a8ff | 87 | ******************************************************************************/ |
bogdanm | 0:9b334a45a8ff | 88 | |
bogdanm | 0:9b334a45a8ff | 89 | /***************************************************************************//** |
bogdanm | 0:9b334a45a8ff | 90 | * @brief |
bogdanm | 0:9b334a45a8ff | 91 | * Sets up the ACMP for use in capacative sense applications. |
bogdanm | 0:9b334a45a8ff | 92 | * |
bogdanm | 0:9b334a45a8ff | 93 | * @details |
bogdanm | 0:9b334a45a8ff | 94 | * This function sets up the ACMP for use in capacacitve sense applications. |
bogdanm | 0:9b334a45a8ff | 95 | * To use the capacative sense functionality in the ACMP you need to use |
bogdanm | 0:9b334a45a8ff | 96 | * the PRS output of the ACMP module to count the number of oscillations |
bogdanm | 0:9b334a45a8ff | 97 | * in the capacative sense circuit (possibly using a TIMER). |
bogdanm | 0:9b334a45a8ff | 98 | * |
bogdanm | 0:9b334a45a8ff | 99 | * @note |
bogdanm | 0:9b334a45a8ff | 100 | * A basic example of capacative sensing can be found in the STK BSP |
bogdanm | 0:9b334a45a8ff | 101 | * (capsense demo). |
bogdanm | 0:9b334a45a8ff | 102 | * |
bogdanm | 0:9b334a45a8ff | 103 | * @param[in] acmp |
bogdanm | 0:9b334a45a8ff | 104 | * Pointer to ACMP peripheral register block. |
bogdanm | 0:9b334a45a8ff | 105 | * |
bogdanm | 0:9b334a45a8ff | 106 | * @param[in] init |
bogdanm | 0:9b334a45a8ff | 107 | * Pointer to initialization structure used to configure ACMP for capacative |
bogdanm | 0:9b334a45a8ff | 108 | * sensing operation. |
bogdanm | 0:9b334a45a8ff | 109 | ******************************************************************************/ |
bogdanm | 0:9b334a45a8ff | 110 | void ACMP_CapsenseInit(ACMP_TypeDef *acmp, const ACMP_CapsenseInit_TypeDef *init) |
bogdanm | 0:9b334a45a8ff | 111 | { |
bogdanm | 0:9b334a45a8ff | 112 | /* Make sure the module exists on the selected chip */ |
bogdanm | 0:9b334a45a8ff | 113 | EFM_ASSERT(ACMP_REF_VALID(acmp)); |
bogdanm | 0:9b334a45a8ff | 114 | |
bogdanm | 0:9b334a45a8ff | 115 | /* Make sure that vddLevel is within bounds */ |
mbed_official | 50:a417edff4437 | 116 | #if defined(_ACMP_INPUTSEL_VDDLEVEL_MASK) |
bogdanm | 0:9b334a45a8ff | 117 | EFM_ASSERT(init->vddLevel < 64); |
mbed_official | 50:a417edff4437 | 118 | #else |
mbed_official | 50:a417edff4437 | 119 | EFM_ASSERT(init->vddLevelLow < 64); |
mbed_official | 50:a417edff4437 | 120 | EFM_ASSERT(init->vddLevelHigh < 64); |
mbed_official | 50:a417edff4437 | 121 | #endif |
bogdanm | 0:9b334a45a8ff | 122 | |
bogdanm | 0:9b334a45a8ff | 123 | /* Make sure biasprog is within bounds */ |
mbed_official | 50:a417edff4437 | 124 | EFM_ASSERT(init->biasProg <= |
mbed_official | 50:a417edff4437 | 125 | (_ACMP_CTRL_BIASPROG_MASK >> _ACMP_CTRL_BIASPROG_SHIFT)); |
bogdanm | 0:9b334a45a8ff | 126 | |
bogdanm | 0:9b334a45a8ff | 127 | /* Set control register. No need to set interrupt modes */ |
bogdanm | 0:9b334a45a8ff | 128 | acmp->CTRL = (init->fullBias << _ACMP_CTRL_FULLBIAS_SHIFT) |
mbed_official | 50:a417edff4437 | 129 | #if defined(_ACMP_CTRL_HALFBIAS_MASK) |
bogdanm | 0:9b334a45a8ff | 130 | | (init->halfBias << _ACMP_CTRL_HALFBIAS_SHIFT) |
mbed_official | 50:a417edff4437 | 131 | #endif |
bogdanm | 0:9b334a45a8ff | 132 | | (init->biasProg << _ACMP_CTRL_BIASPROG_SHIFT) |
mbed_official | 50:a417edff4437 | 133 | #if defined(_ACMP_CTRL_WARMTIME_MASK) |
bogdanm | 0:9b334a45a8ff | 134 | | (init->warmTime << _ACMP_CTRL_WARMTIME_SHIFT) |
mbed_official | 50:a417edff4437 | 135 | #endif |
mbed_official | 50:a417edff4437 | 136 | #if defined(_ACMP_CTRL_HYSTSEL_MASK) |
mbed_official | 50:a417edff4437 | 137 | | (init->hysteresisLevel << _ACMP_CTRL_HYSTSEL_SHIFT) |
mbed_official | 50:a417edff4437 | 138 | #endif |
mbed_official | 50:a417edff4437 | 139 | #if defined(_ACMP_CTRL_ACCURACY_MASK) |
mbed_official | 50:a417edff4437 | 140 | | ACMP_CTRL_ACCURACY_HIGH |
mbed_official | 50:a417edff4437 | 141 | #endif |
mbed_official | 50:a417edff4437 | 142 | ; |
mbed_official | 50:a417edff4437 | 143 | |
mbed_official | 50:a417edff4437 | 144 | #if defined(_ACMP_HYSTERESIS0_MASK) |
mbed_official | 50:a417edff4437 | 145 | acmp->HYSTERESIS0 = (init->vddLevelHigh << _ACMP_HYSTERESIS0_DIVVA_SHIFT) |
mbed_official | 50:a417edff4437 | 146 | | (init->hysteresisLevel_0 << _ACMP_HYSTERESIS0_HYST_SHIFT); |
mbed_official | 50:a417edff4437 | 147 | acmp->HYSTERESIS1 = (init->vddLevelLow << _ACMP_HYSTERESIS1_DIVVA_SHIFT) |
mbed_official | 50:a417edff4437 | 148 | | (init->hysteresisLevel_1 << _ACMP_HYSTERESIS1_HYST_SHIFT); |
mbed_official | 50:a417edff4437 | 149 | #endif |
bogdanm | 0:9b334a45a8ff | 150 | |
bogdanm | 0:9b334a45a8ff | 151 | /* Select capacative sensing mode by selecting a resistor and enabling it */ |
bogdanm | 0:9b334a45a8ff | 152 | acmp->INPUTSEL = (init->resistor << _ACMP_INPUTSEL_CSRESSEL_SHIFT) |
bogdanm | 0:9b334a45a8ff | 153 | | ACMP_INPUTSEL_CSRESEN |
mbed_official | 50:a417edff4437 | 154 | #if defined(_ACMP_INPUTSEL_LPREF_MASK) |
bogdanm | 0:9b334a45a8ff | 155 | | (init->lowPowerReferenceEnabled << _ACMP_INPUTSEL_LPREF_SHIFT) |
mbed_official | 50:a417edff4437 | 156 | #endif |
mbed_official | 50:a417edff4437 | 157 | #if defined(_ACMP_INPUTSEL_VDDLEVEL_MASK) |
bogdanm | 0:9b334a45a8ff | 158 | | (init->vddLevel << _ACMP_INPUTSEL_VDDLEVEL_SHIFT) |
mbed_official | 50:a417edff4437 | 159 | #endif |
mbed_official | 50:a417edff4437 | 160 | #if defined(ACMP_INPUTSEL_NEGSEL_CAPSENSE) |
mbed_official | 50:a417edff4437 | 161 | | ACMP_INPUTSEL_NEGSEL_CAPSENSE |
mbed_official | 50:a417edff4437 | 162 | #else |
mbed_official | 50:a417edff4437 | 163 | | ACMP_INPUTSEL_VASEL_VDD |
mbed_official | 50:a417edff4437 | 164 | | ACMP_INPUTSEL_NEGSEL_VADIV |
mbed_official | 50:a417edff4437 | 165 | #endif |
mbed_official | 50:a417edff4437 | 166 | ; |
bogdanm | 0:9b334a45a8ff | 167 | |
mbed_official | 50:a417edff4437 | 168 | /* Enable ACMP if requested. */ |
mbed_official | 50:a417edff4437 | 169 | BUS_RegBitWrite(&(acmp->CTRL), _ACMP_CTRL_EN_SHIFT, init->enable); |
bogdanm | 0:9b334a45a8ff | 170 | } |
bogdanm | 0:9b334a45a8ff | 171 | |
bogdanm | 0:9b334a45a8ff | 172 | /***************************************************************************//** |
bogdanm | 0:9b334a45a8ff | 173 | * @brief |
bogdanm | 0:9b334a45a8ff | 174 | * Sets the ACMP channel used for capacative sensing. |
bogdanm | 0:9b334a45a8ff | 175 | * |
bogdanm | 0:9b334a45a8ff | 176 | * @note |
bogdanm | 0:9b334a45a8ff | 177 | * A basic example of capacative sensing can be found in the STK BSP |
bogdanm | 0:9b334a45a8ff | 178 | * (capsense demo). |
bogdanm | 0:9b334a45a8ff | 179 | * |
bogdanm | 0:9b334a45a8ff | 180 | * @param[in] acmp |
bogdanm | 0:9b334a45a8ff | 181 | * Pointer to ACMP peripheral register block. |
bogdanm | 0:9b334a45a8ff | 182 | * |
bogdanm | 0:9b334a45a8ff | 183 | * @param[in] channel |
bogdanm | 0:9b334a45a8ff | 184 | * The ACMP channel to use for capacative sensing (Possel). |
bogdanm | 0:9b334a45a8ff | 185 | ******************************************************************************/ |
bogdanm | 0:9b334a45a8ff | 186 | void ACMP_CapsenseChannelSet(ACMP_TypeDef *acmp, ACMP_Channel_TypeDef channel) |
bogdanm | 0:9b334a45a8ff | 187 | { |
mbed_official | 50:a417edff4437 | 188 | /* Make sure the module exists on the selected chip */ |
mbed_official | 50:a417edff4437 | 189 | EFM_ASSERT(ACMP_REF_VALID(acmp)); |
mbed_official | 50:a417edff4437 | 190 | |
mbed_official | 50:a417edff4437 | 191 | #if defined(_ACMP_INPUTSEL_POSSEL_CH7) |
bogdanm | 0:9b334a45a8ff | 192 | /* Make sure that only external channels are used */ |
bogdanm | 0:9b334a45a8ff | 193 | EFM_ASSERT(channel <= _ACMP_INPUTSEL_POSSEL_CH7); |
mbed_official | 50:a417edff4437 | 194 | #elif defined(_ACMP_INPUTSEL_POSSEL_BUS4XCH31) |
mbed_official | 50:a417edff4437 | 195 | /* Make sure that only external channels are used */ |
mbed_official | 50:a417edff4437 | 196 | EFM_ASSERT(channel <= _ACMP_INPUTSEL_POSSEL_BUS4XCH31); |
mbed_official | 50:a417edff4437 | 197 | #endif |
bogdanm | 0:9b334a45a8ff | 198 | |
bogdanm | 0:9b334a45a8ff | 199 | /* Set channel as positive channel in ACMP */ |
mbed_official | 50:a417edff4437 | 200 | BUS_RegMaskedWrite(&acmp->INPUTSEL, _ACMP_INPUTSEL_POSSEL_MASK, |
mbed_official | 50:a417edff4437 | 201 | channel << _ACMP_INPUTSEL_POSSEL_SHIFT); |
bogdanm | 0:9b334a45a8ff | 202 | } |
bogdanm | 0:9b334a45a8ff | 203 | |
bogdanm | 0:9b334a45a8ff | 204 | /***************************************************************************//** |
bogdanm | 0:9b334a45a8ff | 205 | * @brief |
bogdanm | 0:9b334a45a8ff | 206 | * Disables the ACMP. |
bogdanm | 0:9b334a45a8ff | 207 | * |
bogdanm | 0:9b334a45a8ff | 208 | * @param[in] acmp |
bogdanm | 0:9b334a45a8ff | 209 | * Pointer to ACMP peripheral register block. |
bogdanm | 0:9b334a45a8ff | 210 | ******************************************************************************/ |
bogdanm | 0:9b334a45a8ff | 211 | void ACMP_Disable(ACMP_TypeDef *acmp) |
bogdanm | 0:9b334a45a8ff | 212 | { |
mbed_official | 50:a417edff4437 | 213 | /* Make sure the module exists on the selected chip */ |
mbed_official | 50:a417edff4437 | 214 | EFM_ASSERT(ACMP_REF_VALID(acmp)); |
mbed_official | 50:a417edff4437 | 215 | |
bogdanm | 0:9b334a45a8ff | 216 | acmp->CTRL &= ~ACMP_CTRL_EN; |
bogdanm | 0:9b334a45a8ff | 217 | } |
bogdanm | 0:9b334a45a8ff | 218 | |
bogdanm | 0:9b334a45a8ff | 219 | /***************************************************************************//** |
bogdanm | 0:9b334a45a8ff | 220 | * @brief |
bogdanm | 0:9b334a45a8ff | 221 | * Enables the ACMP. |
bogdanm | 0:9b334a45a8ff | 222 | * |
bogdanm | 0:9b334a45a8ff | 223 | * @param[in] acmp |
bogdanm | 0:9b334a45a8ff | 224 | * Pointer to ACMP peripheral register block. |
bogdanm | 0:9b334a45a8ff | 225 | ******************************************************************************/ |
bogdanm | 0:9b334a45a8ff | 226 | void ACMP_Enable(ACMP_TypeDef *acmp) |
bogdanm | 0:9b334a45a8ff | 227 | { |
mbed_official | 50:a417edff4437 | 228 | /* Make sure the module exists on the selected chip */ |
mbed_official | 50:a417edff4437 | 229 | EFM_ASSERT(ACMP_REF_VALID(acmp)); |
mbed_official | 50:a417edff4437 | 230 | |
bogdanm | 0:9b334a45a8ff | 231 | acmp->CTRL |= ACMP_CTRL_EN; |
bogdanm | 0:9b334a45a8ff | 232 | } |
bogdanm | 0:9b334a45a8ff | 233 | |
bogdanm | 0:9b334a45a8ff | 234 | /***************************************************************************//** |
bogdanm | 0:9b334a45a8ff | 235 | * @brief |
bogdanm | 0:9b334a45a8ff | 236 | * Reset ACMP to same state as after a HW reset. |
bogdanm | 0:9b334a45a8ff | 237 | * |
bogdanm | 0:9b334a45a8ff | 238 | * @note |
bogdanm | 0:9b334a45a8ff | 239 | * The ROUTE register is NOT reset by this function, in order to allow for |
bogdanm | 0:9b334a45a8ff | 240 | * centralized setup of this feature. |
bogdanm | 0:9b334a45a8ff | 241 | * |
bogdanm | 0:9b334a45a8ff | 242 | * @param[in] acmp |
bogdanm | 0:9b334a45a8ff | 243 | * Pointer to the ACMP peripheral register block. |
bogdanm | 0:9b334a45a8ff | 244 | ******************************************************************************/ |
bogdanm | 0:9b334a45a8ff | 245 | void ACMP_Reset(ACMP_TypeDef *acmp) |
bogdanm | 0:9b334a45a8ff | 246 | { |
bogdanm | 0:9b334a45a8ff | 247 | /* Make sure the module exists on the selected chip */ |
bogdanm | 0:9b334a45a8ff | 248 | EFM_ASSERT(ACMP_REF_VALID(acmp)); |
bogdanm | 0:9b334a45a8ff | 249 | |
mbed_official | 50:a417edff4437 | 250 | acmp->CTRL = _ACMP_CTRL_RESETVALUE; |
mbed_official | 50:a417edff4437 | 251 | acmp->INPUTSEL = _ACMP_INPUTSEL_RESETVALUE; |
mbed_official | 50:a417edff4437 | 252 | #if defined(_ACMP_HYSTERESIS0_HYST_MASK) |
mbed_official | 50:a417edff4437 | 253 | acmp->HYSTERESIS0 = _ACMP_HYSTERESIS0_RESETVALUE; |
mbed_official | 50:a417edff4437 | 254 | acmp->HYSTERESIS1 = _ACMP_HYSTERESIS1_RESETVALUE; |
mbed_official | 50:a417edff4437 | 255 | #endif |
mbed_official | 50:a417edff4437 | 256 | acmp->IEN = _ACMP_IEN_RESETVALUE; |
mbed_official | 50:a417edff4437 | 257 | acmp->IFC = _ACMP_IF_MASK; |
bogdanm | 0:9b334a45a8ff | 258 | } |
bogdanm | 0:9b334a45a8ff | 259 | |
bogdanm | 0:9b334a45a8ff | 260 | /***************************************************************************//** |
bogdanm | 0:9b334a45a8ff | 261 | * @brief |
bogdanm | 0:9b334a45a8ff | 262 | * Sets up GPIO output from the ACMP. |
bogdanm | 0:9b334a45a8ff | 263 | * |
bogdanm | 0:9b334a45a8ff | 264 | * @note |
bogdanm | 0:9b334a45a8ff | 265 | * GPIO must be enabled in the CMU before this function call, i.e. |
bogdanm | 0:9b334a45a8ff | 266 | * @verbatim CMU_ClockEnable(cmuClock_GPIO, true); @endverbatim |
bogdanm | 0:9b334a45a8ff | 267 | * |
bogdanm | 0:9b334a45a8ff | 268 | * @param[in] acmp |
bogdanm | 0:9b334a45a8ff | 269 | * Pointer to the ACMP peripheral register block. |
bogdanm | 0:9b334a45a8ff | 270 | * |
bogdanm | 0:9b334a45a8ff | 271 | * @param location |
bogdanm | 0:9b334a45a8ff | 272 | * The pin location to use. See the datasheet for location to pin mappings. |
bogdanm | 0:9b334a45a8ff | 273 | * |
bogdanm | 0:9b334a45a8ff | 274 | * @param enable |
bogdanm | 0:9b334a45a8ff | 275 | * Enable or disable pin output. |
bogdanm | 0:9b334a45a8ff | 276 | * |
bogdanm | 0:9b334a45a8ff | 277 | * @param invert |
bogdanm | 0:9b334a45a8ff | 278 | * Invert output. |
bogdanm | 0:9b334a45a8ff | 279 | ******************************************************************************/ |
bogdanm | 0:9b334a45a8ff | 280 | void ACMP_GPIOSetup(ACMP_TypeDef *acmp, uint32_t location, bool enable, bool invert) |
bogdanm | 0:9b334a45a8ff | 281 | { |
mbed_official | 50:a417edff4437 | 282 | /* Make sure the module exists on the selected chip */ |
mbed_official | 50:a417edff4437 | 283 | EFM_ASSERT(ACMP_REF_VALID(acmp)); |
bogdanm | 0:9b334a45a8ff | 284 | |
mbed_official | 50:a417edff4437 | 285 | /* Sanity checking of location */ |
mbed_official | 50:a417edff4437 | 286 | EFM_ASSERT(location <= _ACMP_ROUTE_LOCATION_MAX); |
bogdanm | 0:9b334a45a8ff | 287 | |
bogdanm | 0:9b334a45a8ff | 288 | /* Set GPIO inversion */ |
mbed_official | 50:a417edff4437 | 289 | BUS_RegMaskedWrite(&acmp->CTRL, _ACMP_CTRL_GPIOINV_MASK, |
mbed_official | 50:a417edff4437 | 290 | invert << _ACMP_CTRL_GPIOINV_SHIFT); |
bogdanm | 0:9b334a45a8ff | 291 | |
mbed_official | 50:a417edff4437 | 292 | #if defined(_ACMP_ROUTE_MASK) |
bogdanm | 0:9b334a45a8ff | 293 | acmp->ROUTE = (location << _ACMP_ROUTE_LOCATION_SHIFT) |
bogdanm | 0:9b334a45a8ff | 294 | | (enable << _ACMP_ROUTE_ACMPPEN_SHIFT); |
mbed_official | 50:a417edff4437 | 295 | #endif |
mbed_official | 50:a417edff4437 | 296 | #if defined(_ACMP_ROUTELOC0_MASK) |
mbed_official | 50:a417edff4437 | 297 | acmp->ROUTELOC0 = location << _ACMP_ROUTELOC0_OUTLOC_SHIFT; |
mbed_official | 50:a417edff4437 | 298 | acmp->ROUTEPEN = enable ? ACMP_ROUTEPEN_OUTPEN : 0; |
mbed_official | 50:a417edff4437 | 299 | #endif |
bogdanm | 0:9b334a45a8ff | 300 | } |
bogdanm | 0:9b334a45a8ff | 301 | |
bogdanm | 0:9b334a45a8ff | 302 | /***************************************************************************//** |
bogdanm | 0:9b334a45a8ff | 303 | * @brief |
bogdanm | 0:9b334a45a8ff | 304 | * Sets which channels should be used in ACMP comparisons. |
bogdanm | 0:9b334a45a8ff | 305 | * |
bogdanm | 0:9b334a45a8ff | 306 | * @param[in] acmp |
bogdanm | 0:9b334a45a8ff | 307 | * Pointer to the ACMP peripheral register block. |
bogdanm | 0:9b334a45a8ff | 308 | * |
bogdanm | 0:9b334a45a8ff | 309 | * @param negSel |
bogdanm | 0:9b334a45a8ff | 310 | * Channel to use on the negative input to the ACMP. |
bogdanm | 0:9b334a45a8ff | 311 | * |
bogdanm | 0:9b334a45a8ff | 312 | * @param posSel |
bogdanm | 0:9b334a45a8ff | 313 | * Channel to use on the positive input to the ACMP. |
bogdanm | 0:9b334a45a8ff | 314 | ******************************************************************************/ |
bogdanm | 0:9b334a45a8ff | 315 | void ACMP_ChannelSet(ACMP_TypeDef *acmp, ACMP_Channel_TypeDef negSel, |
bogdanm | 0:9b334a45a8ff | 316 | ACMP_Channel_TypeDef posSel) |
bogdanm | 0:9b334a45a8ff | 317 | { |
mbed_official | 50:a417edff4437 | 318 | /* Make sure the module exists on the selected chip */ |
mbed_official | 50:a417edff4437 | 319 | EFM_ASSERT(ACMP_REF_VALID(acmp)); |
bogdanm | 0:9b334a45a8ff | 320 | |
mbed_official | 50:a417edff4437 | 321 | /* Make sure that posSel and negSel channel selectors are valid. */ |
bogdanm | 0:9b334a45a8ff | 322 | #if defined(_ACMP_INPUTSEL_NEGSEL_DAC0CH1) |
bogdanm | 0:9b334a45a8ff | 323 | EFM_ASSERT(negSel <= _ACMP_INPUTSEL_NEGSEL_DAC0CH1); |
bogdanm | 0:9b334a45a8ff | 324 | #elif defined(_ACMP_INPUTSEL_NEGSEL_CAPSENSE) |
bogdanm | 0:9b334a45a8ff | 325 | EFM_ASSERT(negSel <= _ACMP_INPUTSEL_NEGSEL_CAPSENSE); |
bogdanm | 0:9b334a45a8ff | 326 | #endif |
bogdanm | 0:9b334a45a8ff | 327 | |
mbed_official | 50:a417edff4437 | 328 | #if defined(_ACMP_INPUTSEL_POSSEL_CH7) |
mbed_official | 50:a417edff4437 | 329 | EFM_ASSERT(posSel <= _ACMP_INPUTSEL_POSSEL_CH7); |
mbed_official | 50:a417edff4437 | 330 | #endif |
mbed_official | 50:a417edff4437 | 331 | |
mbed_official | 50:a417edff4437 | 332 | acmp->INPUTSEL = (acmp->INPUTSEL & ~(_ACMP_INPUTSEL_POSSEL_MASK |
mbed_official | 50:a417edff4437 | 333 | | _ACMP_INPUTSEL_NEGSEL_MASK)) |
bogdanm | 0:9b334a45a8ff | 334 | | (negSel << _ACMP_INPUTSEL_NEGSEL_SHIFT) |
bogdanm | 0:9b334a45a8ff | 335 | | (posSel << _ACMP_INPUTSEL_POSSEL_SHIFT); |
bogdanm | 0:9b334a45a8ff | 336 | } |
bogdanm | 0:9b334a45a8ff | 337 | |
bogdanm | 0:9b334a45a8ff | 338 | /***************************************************************************//** |
bogdanm | 0:9b334a45a8ff | 339 | * @brief |
mbed_official | 50:a417edff4437 | 340 | * Initialize ACMP. |
bogdanm | 0:9b334a45a8ff | 341 | * |
bogdanm | 0:9b334a45a8ff | 342 | * @param[in] acmp |
bogdanm | 0:9b334a45a8ff | 343 | * Pointer to the ACMP peripheral register block. |
bogdanm | 0:9b334a45a8ff | 344 | * |
bogdanm | 0:9b334a45a8ff | 345 | * @param[in] init |
bogdanm | 0:9b334a45a8ff | 346 | * Pointer to initialization structure used to configure ACMP for capacative |
bogdanm | 0:9b334a45a8ff | 347 | * sensing operation. |
bogdanm | 0:9b334a45a8ff | 348 | ******************************************************************************/ |
bogdanm | 0:9b334a45a8ff | 349 | void ACMP_Init(ACMP_TypeDef *acmp, const ACMP_Init_TypeDef *init) |
bogdanm | 0:9b334a45a8ff | 350 | { |
bogdanm | 0:9b334a45a8ff | 351 | /* Make sure the module exists on the selected chip */ |
bogdanm | 0:9b334a45a8ff | 352 | EFM_ASSERT(ACMP_REF_VALID(acmp)); |
bogdanm | 0:9b334a45a8ff | 353 | |
bogdanm | 0:9b334a45a8ff | 354 | /* Make sure biasprog is within bounds */ |
bogdanm | 0:9b334a45a8ff | 355 | EFM_ASSERT(init->biasProg < 16); |
bogdanm | 0:9b334a45a8ff | 356 | |
mbed_official | 50:a417edff4437 | 357 | /* Make sure the ACMP is disable since we might be changing the |
mbed_official | 50:a417edff4437 | 358 | * ACMP power source */ |
mbed_official | 50:a417edff4437 | 359 | BUS_RegBitWrite(&acmp->CTRL, _ACMP_CTRL_EN_SHIFT, 0); |
mbed_official | 50:a417edff4437 | 360 | |
bogdanm | 0:9b334a45a8ff | 361 | /* Set control register. No need to set interrupt modes */ |
bogdanm | 0:9b334a45a8ff | 362 | acmp->CTRL = (init->fullBias << _ACMP_CTRL_FULLBIAS_SHIFT) |
mbed_official | 50:a417edff4437 | 363 | #if defined(_ACMP_CTRL_HALFBIAS_MASK) |
bogdanm | 0:9b334a45a8ff | 364 | | (init->halfBias << _ACMP_CTRL_HALFBIAS_SHIFT) |
mbed_official | 50:a417edff4437 | 365 | #endif |
bogdanm | 0:9b334a45a8ff | 366 | | (init->biasProg << _ACMP_CTRL_BIASPROG_SHIFT) |
bogdanm | 0:9b334a45a8ff | 367 | | (init->interruptOnFallingEdge << _ACMP_CTRL_IFALL_SHIFT) |
bogdanm | 0:9b334a45a8ff | 368 | | (init->interruptOnRisingEdge << _ACMP_CTRL_IRISE_SHIFT) |
mbed_official | 50:a417edff4437 | 369 | #if defined(_ACMP_CTRL_INPUTRANGE_MASK) |
mbed_official | 50:a417edff4437 | 370 | | (init->inputRange << _ACMP_CTRL_INPUTRANGE_SHIFT) |
mbed_official | 50:a417edff4437 | 371 | #endif |
mbed_official | 50:a417edff4437 | 372 | #if defined(_ACMP_CTRL_ACCURACY_MASK) |
mbed_official | 50:a417edff4437 | 373 | | (init->accuracy << _ACMP_CTRL_ACCURACY_SHIFT) |
mbed_official | 50:a417edff4437 | 374 | #endif |
mbed_official | 50:a417edff4437 | 375 | #if defined(_ACMP_CTRL_PWRSEL_MASK) |
mbed_official | 50:a417edff4437 | 376 | | (init->powerSource << _ACMP_CTRL_PWRSEL_SHIFT) |
mbed_official | 50:a417edff4437 | 377 | #endif |
mbed_official | 50:a417edff4437 | 378 | #if defined(_ACMP_CTRL_WARMTIME_MASK) |
bogdanm | 0:9b334a45a8ff | 379 | | (init->warmTime << _ACMP_CTRL_WARMTIME_SHIFT) |
mbed_official | 50:a417edff4437 | 380 | #endif |
mbed_official | 50:a417edff4437 | 381 | #if defined(_ACMP_CTRL_HYSTSEL_MASK) |
bogdanm | 0:9b334a45a8ff | 382 | | (init->hysteresisLevel << _ACMP_CTRL_HYSTSEL_SHIFT) |
mbed_official | 50:a417edff4437 | 383 | #endif |
bogdanm | 0:9b334a45a8ff | 384 | | (init->inactiveValue << _ACMP_CTRL_INACTVAL_SHIFT); |
bogdanm | 0:9b334a45a8ff | 385 | |
mbed_official | 50:a417edff4437 | 386 | acmp->INPUTSEL = (0) |
mbed_official | 50:a417edff4437 | 387 | #if defined(_ACMP_INPUTSEL_VLPSEL_MASK) |
mbed_official | 50:a417edff4437 | 388 | | (init->vlpInput << _ACMP_INPUTSEL_VLPSEL_SHIFT) |
mbed_official | 50:a417edff4437 | 389 | #endif |
mbed_official | 50:a417edff4437 | 390 | #if defined(_ACMP_INPUTSEL_LPREF_MASK) |
mbed_official | 50:a417edff4437 | 391 | | (init->lowPowerReferenceEnabled << _ACMP_INPUTSEL_LPREF_SHIFT) |
mbed_official | 50:a417edff4437 | 392 | #endif |
mbed_official | 50:a417edff4437 | 393 | #if defined(_ACMP_INPUTSEL_VDDLEVEL_MASK) |
mbed_official | 50:a417edff4437 | 394 | | (init->vddLevel << _ACMP_INPUTSEL_VDDLEVEL_SHIFT) |
mbed_official | 50:a417edff4437 | 395 | #endif |
mbed_official | 50:a417edff4437 | 396 | ; |
bogdanm | 0:9b334a45a8ff | 397 | |
mbed_official | 50:a417edff4437 | 398 | /* Enable ACMP if requested. */ |
mbed_official | 50:a417edff4437 | 399 | BUS_RegBitWrite(&(acmp->CTRL), _ACMP_CTRL_EN_SHIFT, init->enable); |
bogdanm | 0:9b334a45a8ff | 400 | } |
bogdanm | 0:9b334a45a8ff | 401 | |
mbed_official | 50:a417edff4437 | 402 | #if defined(_ACMP_INPUTSEL_VASEL_MASK) |
mbed_official | 50:a417edff4437 | 403 | /***************************************************************************//** |
mbed_official | 50:a417edff4437 | 404 | * @brief |
mbed_official | 50:a417edff4437 | 405 | * Setup the VA Source. |
mbed_official | 50:a417edff4437 | 406 | * |
mbed_official | 50:a417edff4437 | 407 | * @param[in] acmp |
mbed_official | 50:a417edff4437 | 408 | * Pointer to the ACMP peripheral register block. |
mbed_official | 50:a417edff4437 | 409 | * |
mbed_official | 50:a417edff4437 | 410 | * @param[in] vaconfig |
mbed_official | 50:a417edff4437 | 411 | * Pointer to the structure used to configure the VA source. This structure |
mbed_official | 50:a417edff4437 | 412 | * contains the input source as well as the 2 divider values. |
mbed_official | 50:a417edff4437 | 413 | ******************************************************************************/ |
mbed_official | 50:a417edff4437 | 414 | void ACMP_VASetup(ACMP_TypeDef *acmp, const ACMP_VAConfig_TypeDef *vaconfig) |
mbed_official | 50:a417edff4437 | 415 | { |
mbed_official | 50:a417edff4437 | 416 | EFM_ASSERT(vaconfig->div0 < 64); |
mbed_official | 50:a417edff4437 | 417 | EFM_ASSERT(vaconfig->div1 < 64); |
mbed_official | 50:a417edff4437 | 418 | |
mbed_official | 50:a417edff4437 | 419 | BUS_RegMaskedWrite(&acmp->INPUTSEL, _ACMP_INPUTSEL_VASEL_MASK, |
mbed_official | 50:a417edff4437 | 420 | vaconfig->input << _ACMP_INPUTSEL_VASEL_SHIFT); |
mbed_official | 50:a417edff4437 | 421 | BUS_RegMaskedWrite(&acmp->HYSTERESIS0, _ACMP_HYSTERESIS0_DIVVA_MASK, |
mbed_official | 50:a417edff4437 | 422 | vaconfig->div0 << _ACMP_HYSTERESIS0_DIVVA_SHIFT); |
mbed_official | 50:a417edff4437 | 423 | BUS_RegMaskedWrite(&acmp->HYSTERESIS1, _ACMP_HYSTERESIS1_DIVVA_MASK, |
mbed_official | 50:a417edff4437 | 424 | vaconfig->div1 << _ACMP_HYSTERESIS1_DIVVA_SHIFT); |
mbed_official | 50:a417edff4437 | 425 | } |
mbed_official | 50:a417edff4437 | 426 | #endif |
mbed_official | 50:a417edff4437 | 427 | |
mbed_official | 50:a417edff4437 | 428 | #if defined(_ACMP_INPUTSEL_VBSEL_MASK) |
mbed_official | 50:a417edff4437 | 429 | /***************************************************************************//** |
mbed_official | 50:a417edff4437 | 430 | * @brief |
mbed_official | 50:a417edff4437 | 431 | * Setup the VB Source. |
mbed_official | 50:a417edff4437 | 432 | * |
mbed_official | 50:a417edff4437 | 433 | * @param[in] acmp |
mbed_official | 50:a417edff4437 | 434 | * Pointer to the ACMP peripheral register block. |
mbed_official | 50:a417edff4437 | 435 | * |
mbed_official | 50:a417edff4437 | 436 | * @param[in] vbconfig |
mbed_official | 50:a417edff4437 | 437 | * Pointer to the structure used to configure the VB source. This structure |
mbed_official | 50:a417edff4437 | 438 | * contains the input source as well as the 2 divider values. |
mbed_official | 50:a417edff4437 | 439 | ******************************************************************************/ |
mbed_official | 50:a417edff4437 | 440 | void ACMP_VBSetup(ACMP_TypeDef *acmp, const ACMP_VBConfig_TypeDef *vbconfig) |
mbed_official | 50:a417edff4437 | 441 | { |
mbed_official | 50:a417edff4437 | 442 | EFM_ASSERT(vbconfig->div0 < 64); |
mbed_official | 50:a417edff4437 | 443 | EFM_ASSERT(vbconfig->div1 < 64); |
mbed_official | 50:a417edff4437 | 444 | |
mbed_official | 50:a417edff4437 | 445 | BUS_RegMaskedWrite(&acmp->INPUTSEL, _ACMP_INPUTSEL_VBSEL_MASK, |
mbed_official | 50:a417edff4437 | 446 | vbconfig->input << _ACMP_INPUTSEL_VBSEL_SHIFT); |
mbed_official | 50:a417edff4437 | 447 | BUS_RegMaskedWrite(&acmp->HYSTERESIS0, _ACMP_HYSTERESIS0_DIVVB_MASK, |
mbed_official | 50:a417edff4437 | 448 | vbconfig->div0 << _ACMP_HYSTERESIS0_DIVVB_SHIFT); |
mbed_official | 50:a417edff4437 | 449 | BUS_RegMaskedWrite(&acmp->HYSTERESIS1, _ACMP_HYSTERESIS1_DIVVB_MASK, |
mbed_official | 50:a417edff4437 | 450 | vbconfig->div1 << _ACMP_HYSTERESIS1_DIVVB_SHIFT); |
mbed_official | 50:a417edff4437 | 451 | } |
mbed_official | 50:a417edff4437 | 452 | #endif |
bogdanm | 0:9b334a45a8ff | 453 | |
bogdanm | 0:9b334a45a8ff | 454 | /** @} (end addtogroup ACMP) */ |
bogdanm | 0:9b334a45a8ff | 455 | /** @} (end addtogroup EM_Library) */ |
bogdanm | 0:9b334a45a8ff | 456 | #endif /* defined(ACMP_COUNT) && (ACMP_COUNT > 0) */ |