added prescaler for 16 bit pwm in LPC1347 target
Fork of mbed-dev by
targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/emlib/src/em_opamp.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_opamp.c |
bogdanm | 0:9b334a45a8ff | 3 | * @brief Operational Amplifier (OPAMP) 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 | |
mbed_official | 50:a417edff4437 | 33 | #include "em_opamp.h" |
mbed_official | 50:a417edff4437 | 34 | #if defined(OPAMP_PRESENT) && (OPAMP_COUNT == 1) |
bogdanm | 0:9b334a45a8ff | 35 | |
bogdanm | 0:9b334a45a8ff | 36 | #include "em_system.h" |
bogdanm | 0:9b334a45a8ff | 37 | #include "em_assert.h" |
bogdanm | 0:9b334a45a8ff | 38 | |
bogdanm | 0:9b334a45a8ff | 39 | /***************************************************************************//** |
bogdanm | 0:9b334a45a8ff | 40 | * @addtogroup EM_Library |
bogdanm | 0:9b334a45a8ff | 41 | * @{ |
bogdanm | 0:9b334a45a8ff | 42 | ******************************************************************************/ |
bogdanm | 0:9b334a45a8ff | 43 | |
bogdanm | 0:9b334a45a8ff | 44 | |
bogdanm | 0:9b334a45a8ff | 45 | /***************************************************************************//** |
bogdanm | 0:9b334a45a8ff | 46 | * @addtogroup OPAMP |
bogdanm | 0:9b334a45a8ff | 47 | * @brief Operational Amplifier (OPAMP) peripheral API |
bogdanm | 0:9b334a45a8ff | 48 | * @details |
bogdanm | 0:9b334a45a8ff | 49 | * This module contains functions to: |
bogdanm | 0:9b334a45a8ff | 50 | * @li OPAMP_Enable() Configure and enable an opamp. |
bogdanm | 0:9b334a45a8ff | 51 | * @li OPAMP_Disable() Disable an opamp. |
bogdanm | 0:9b334a45a8ff | 52 | * |
bogdanm | 0:9b334a45a8ff | 53 | * All OPAMP functions assume that the DAC clock is running. If the DAC is not |
bogdanm | 0:9b334a45a8ff | 54 | * used, the clock can be turned off when the opamp's are configured. |
bogdanm | 0:9b334a45a8ff | 55 | * |
bogdanm | 0:9b334a45a8ff | 56 | * If the available gain values dont suit the application at hand, the resistor |
bogdanm | 0:9b334a45a8ff | 57 | * ladders can be disabled and external gain programming resistors used. |
bogdanm | 0:9b334a45a8ff | 58 | * |
bogdanm | 0:9b334a45a8ff | 59 | * A number of predefined opamp setup macros are available for configuration |
bogdanm | 0:9b334a45a8ff | 60 | * of the most common opamp topologies (see figures below). |
bogdanm | 0:9b334a45a8ff | 61 | * |
bogdanm | 0:9b334a45a8ff | 62 | * @note |
bogdanm | 0:9b334a45a8ff | 63 | * <em>The terms POSPAD and NEGPAD in the figures are used to indicate that these |
bogdanm | 0:9b334a45a8ff | 64 | * pads should be connected to a suitable signal ground.</em> |
bogdanm | 0:9b334a45a8ff | 65 | * |
bogdanm | 0:9b334a45a8ff | 66 | * \n<b>Unity gain voltage follower.</b>\n |
bogdanm | 0:9b334a45a8ff | 67 | * Use predefined macros @ref OPA_INIT_UNITY_GAIN and |
bogdanm | 0:9b334a45a8ff | 68 | * @ref OPA_INIT_UNITY_GAIN_OPA2. |
bogdanm | 0:9b334a45a8ff | 69 | * @verbatim |
bogdanm | 0:9b334a45a8ff | 70 | |
bogdanm | 0:9b334a45a8ff | 71 | |\ |
bogdanm | 0:9b334a45a8ff | 72 | ___________|+\ |
bogdanm | 0:9b334a45a8ff | 73 | | \_______ |
bogdanm | 0:9b334a45a8ff | 74 | ___|_ / | |
bogdanm | 0:9b334a45a8ff | 75 | | | / | |
bogdanm | 0:9b334a45a8ff | 76 | | |/ | |
bogdanm | 0:9b334a45a8ff | 77 | |___________| |
bogdanm | 0:9b334a45a8ff | 78 | @endverbatim |
bogdanm | 0:9b334a45a8ff | 79 | * |
bogdanm | 0:9b334a45a8ff | 80 | * \n<b>Non-inverting amplifier.</b>\n |
bogdanm | 0:9b334a45a8ff | 81 | * Use predefined macros @ref OPA_INIT_NON_INVERTING and |
bogdanm | 0:9b334a45a8ff | 82 | * @ref OPA_INIT_NON_INVERTING_OPA2. |
bogdanm | 0:9b334a45a8ff | 83 | * @verbatim |
bogdanm | 0:9b334a45a8ff | 84 | |
bogdanm | 0:9b334a45a8ff | 85 | |\ |
bogdanm | 0:9b334a45a8ff | 86 | ___________|+\ |
bogdanm | 0:9b334a45a8ff | 87 | | \_______ |
bogdanm | 0:9b334a45a8ff | 88 | ___|_ / | |
bogdanm | 0:9b334a45a8ff | 89 | | | / | |
bogdanm | 0:9b334a45a8ff | 90 | | |/ | |
bogdanm | 0:9b334a45a8ff | 91 | |_____R2____| |
bogdanm | 0:9b334a45a8ff | 92 | | |
bogdanm | 0:9b334a45a8ff | 93 | R1 |
bogdanm | 0:9b334a45a8ff | 94 | | |
bogdanm | 0:9b334a45a8ff | 95 | NEGPAD @endverbatim |
bogdanm | 0:9b334a45a8ff | 96 | * |
bogdanm | 0:9b334a45a8ff | 97 | * \n<b>Inverting amplifier.</b>\n |
bogdanm | 0:9b334a45a8ff | 98 | * Use predefined macros @ref OPA_INIT_INVERTING and |
bogdanm | 0:9b334a45a8ff | 99 | * @ref OPA_INIT_INVERTING_OPA2. |
bogdanm | 0:9b334a45a8ff | 100 | * @verbatim |
bogdanm | 0:9b334a45a8ff | 101 | |
bogdanm | 0:9b334a45a8ff | 102 | _____R2____ |
bogdanm | 0:9b334a45a8ff | 103 | | | |
bogdanm | 0:9b334a45a8ff | 104 | | |\ | |
bogdanm | 0:9b334a45a8ff | 105 | ____R1_|___|_\ | |
bogdanm | 0:9b334a45a8ff | 106 | | \____|___ |
bogdanm | 0:9b334a45a8ff | 107 | ___| / |
bogdanm | 0:9b334a45a8ff | 108 | | |+/ |
bogdanm | 0:9b334a45a8ff | 109 | | |/ |
bogdanm | 0:9b334a45a8ff | 110 | | |
bogdanm | 0:9b334a45a8ff | 111 | POSPAD @endverbatim |
bogdanm | 0:9b334a45a8ff | 112 | * |
bogdanm | 0:9b334a45a8ff | 113 | * \n<b>Cascaded non-inverting amplifiers.</b>\n |
bogdanm | 0:9b334a45a8ff | 114 | * Use predefined macros @ref OPA_INIT_CASCADED_NON_INVERTING_OPA0, |
bogdanm | 0:9b334a45a8ff | 115 | * @ref OPA_INIT_CASCADED_NON_INVERTING_OPA1 and |
bogdanm | 0:9b334a45a8ff | 116 | * @ref OPA_INIT_CASCADED_NON_INVERTING_OPA2. |
bogdanm | 0:9b334a45a8ff | 117 | * @verbatim |
bogdanm | 0:9b334a45a8ff | 118 | |
bogdanm | 0:9b334a45a8ff | 119 | |\ |\ |\ |
bogdanm | 0:9b334a45a8ff | 120 | ___________|+\ OPA0 ___________|+\ OPA1 ___________|+\ OPA2 |
bogdanm | 0:9b334a45a8ff | 121 | | \_________| | \_________| | \_______ |
bogdanm | 0:9b334a45a8ff | 122 | ___|_ / | ___|_ / | ___|_ / | |
bogdanm | 0:9b334a45a8ff | 123 | | | / | | | / | | | / | |
bogdanm | 0:9b334a45a8ff | 124 | | |/ | | |/ | | |/ | |
bogdanm | 0:9b334a45a8ff | 125 | |_____R2____| |_____R2____| |_____R2____| |
bogdanm | 0:9b334a45a8ff | 126 | | | | |
bogdanm | 0:9b334a45a8ff | 127 | R1 R1 R1 |
bogdanm | 0:9b334a45a8ff | 128 | | | | |
bogdanm | 0:9b334a45a8ff | 129 | NEGPAD NEGPAD NEGPAD @endverbatim |
bogdanm | 0:9b334a45a8ff | 130 | * |
bogdanm | 0:9b334a45a8ff | 131 | * \n<b>Cascaded inverting amplifiers.</b>\n |
bogdanm | 0:9b334a45a8ff | 132 | * Use predefined macros @ref OPA_INIT_CASCADED_INVERTING_OPA0, |
bogdanm | 0:9b334a45a8ff | 133 | * @ref OPA_INIT_CASCADED_INVERTING_OPA1 and |
bogdanm | 0:9b334a45a8ff | 134 | * @ref OPA_INIT_CASCADED_INVERTING_OPA2. |
bogdanm | 0:9b334a45a8ff | 135 | * @verbatim |
bogdanm | 0:9b334a45a8ff | 136 | |
bogdanm | 0:9b334a45a8ff | 137 | _____R2____ _____R2____ _____R2____ |
bogdanm | 0:9b334a45a8ff | 138 | | | | | | | |
bogdanm | 0:9b334a45a8ff | 139 | | |\ | | |\ | | |\ | |
bogdanm | 0:9b334a45a8ff | 140 | ____R1_|___|_\ | ____R1_|___|_\ | ____R1_|___|_\ | |
bogdanm | 0:9b334a45a8ff | 141 | | \____|____| | \____|___| | \____|__ |
bogdanm | 0:9b334a45a8ff | 142 | ___| / ___| / ___| / |
bogdanm | 0:9b334a45a8ff | 143 | | |+/ OPA0 | |+/ OPA1 | |+/ OPA2 |
bogdanm | 0:9b334a45a8ff | 144 | | |/ | |/ | |/ |
bogdanm | 0:9b334a45a8ff | 145 | | | | |
bogdanm | 0:9b334a45a8ff | 146 | POSPAD POSPAD POSPAD @endverbatim |
bogdanm | 0:9b334a45a8ff | 147 | * |
bogdanm | 0:9b334a45a8ff | 148 | * \n<b>Differential driver with two opamp's.</b>\n |
bogdanm | 0:9b334a45a8ff | 149 | * Use predefined macros @ref OPA_INIT_DIFF_DRIVER_OPA0 and |
bogdanm | 0:9b334a45a8ff | 150 | * @ref OPA_INIT_DIFF_DRIVER_OPA1. |
bogdanm | 0:9b334a45a8ff | 151 | * @verbatim |
bogdanm | 0:9b334a45a8ff | 152 | |
bogdanm | 0:9b334a45a8ff | 153 | __________________________ |
bogdanm | 0:9b334a45a8ff | 154 | | + |
bogdanm | 0:9b334a45a8ff | 155 | | _____R2____ |
bogdanm | 0:9b334a45a8ff | 156 | |\ | | | |
bogdanm | 0:9b334a45a8ff | 157 | ___________|+\ OPA0 | | |\ OPA1 | |
bogdanm | 0:9b334a45a8ff | 158 | | \_________|____R1_|___|_\ | _ |
bogdanm | 0:9b334a45a8ff | 159 | ___|_ / | | \____|______ |
bogdanm | 0:9b334a45a8ff | 160 | | | / | ___| / |
bogdanm | 0:9b334a45a8ff | 161 | | |/ | | |+/ |
bogdanm | 0:9b334a45a8ff | 162 | |________________| | |/ |
bogdanm | 0:9b334a45a8ff | 163 | | |
bogdanm | 0:9b334a45a8ff | 164 | POSPAD @endverbatim |
bogdanm | 0:9b334a45a8ff | 165 | * |
bogdanm | 0:9b334a45a8ff | 166 | * \n<b>Differential receiver with three opamp's.</b>\n |
bogdanm | 0:9b334a45a8ff | 167 | * Use predefined macros @ref OPA_INIT_DIFF_RECEIVER_OPA0, |
bogdanm | 0:9b334a45a8ff | 168 | * @ref OPA_INIT_DIFF_RECEIVER_OPA1 and @ref OPA_INIT_DIFF_RECEIVER_OPA2. |
bogdanm | 0:9b334a45a8ff | 169 | * @verbatim |
bogdanm | 0:9b334a45a8ff | 170 | |
bogdanm | 0:9b334a45a8ff | 171 | |\ |
bogdanm | 0:9b334a45a8ff | 172 | __________|+\ OPA1 |
bogdanm | 0:9b334a45a8ff | 173 | _ | \_________ |
bogdanm | 0:9b334a45a8ff | 174 | ___|_ / | | _____R2____ |
bogdanm | 0:9b334a45a8ff | 175 | | | / | | | | |
bogdanm | 0:9b334a45a8ff | 176 | | |/ | | | |\ | |
bogdanm | 0:9b334a45a8ff | 177 | |___________| |____R1_|___|_\ | |
bogdanm | 0:9b334a45a8ff | 178 | | \____|___ |
bogdanm | 0:9b334a45a8ff | 179 | |\ ____R1_ ___| / |
bogdanm | 0:9b334a45a8ff | 180 | +__________|+\ OPA0 | | |+/ OPA2 |
bogdanm | 0:9b334a45a8ff | 181 | | \_________| | |/ |
bogdanm | 0:9b334a45a8ff | 182 | ___|_ / | R2 |
bogdanm | 0:9b334a45a8ff | 183 | | | / | | |
bogdanm | 0:9b334a45a8ff | 184 | | |/ | NEGPAD OPA0 |
bogdanm | 0:9b334a45a8ff | 185 | |___________| |
bogdanm | 0:9b334a45a8ff | 186 | @endverbatim |
bogdanm | 0:9b334a45a8ff | 187 | * |
bogdanm | 0:9b334a45a8ff | 188 | * @{ |
bogdanm | 0:9b334a45a8ff | 189 | ******************************************************************************/ |
bogdanm | 0:9b334a45a8ff | 190 | |
bogdanm | 0:9b334a45a8ff | 191 | /******************************************************************************* |
bogdanm | 0:9b334a45a8ff | 192 | ************************** GLOBAL FUNCTIONS ******************************* |
bogdanm | 0:9b334a45a8ff | 193 | ******************************************************************************/ |
bogdanm | 0:9b334a45a8ff | 194 | |
bogdanm | 0:9b334a45a8ff | 195 | /***************************************************************************//** |
bogdanm | 0:9b334a45a8ff | 196 | * @brief |
bogdanm | 0:9b334a45a8ff | 197 | * Disable an Operational Amplifier. |
bogdanm | 0:9b334a45a8ff | 198 | * |
bogdanm | 0:9b334a45a8ff | 199 | * @param[in] dac |
bogdanm | 0:9b334a45a8ff | 200 | * Pointer to DAC peripheral register block. |
bogdanm | 0:9b334a45a8ff | 201 | * |
bogdanm | 0:9b334a45a8ff | 202 | * @param[in] opa |
bogdanm | 0:9b334a45a8ff | 203 | * Selects an OPA, valid vaules are @ref OPA0, @ref OPA1 and @ref OPA2. |
bogdanm | 0:9b334a45a8ff | 204 | ******************************************************************************/ |
mbed_official | 50:a417edff4437 | 205 | void OPAMP_Disable(DAC_TypeDef *dac, OPAMP_TypeDef opa) |
bogdanm | 0:9b334a45a8ff | 206 | { |
mbed_official | 50:a417edff4437 | 207 | EFM_ASSERT(DAC_REF_VALID(dac)); |
mbed_official | 50:a417edff4437 | 208 | EFM_ASSERT(DAC_OPA_VALID(opa)); |
bogdanm | 0:9b334a45a8ff | 209 | |
mbed_official | 50:a417edff4437 | 210 | if (opa == OPA0) |
bogdanm | 0:9b334a45a8ff | 211 | { |
bogdanm | 0:9b334a45a8ff | 212 | dac->CH0CTRL &= ~DAC_CH0CTRL_EN; |
bogdanm | 0:9b334a45a8ff | 213 | dac->OPACTRL &= ~DAC_OPACTRL_OPA0EN; |
bogdanm | 0:9b334a45a8ff | 214 | } |
mbed_official | 50:a417edff4437 | 215 | else if (opa == OPA1) |
bogdanm | 0:9b334a45a8ff | 216 | { |
bogdanm | 0:9b334a45a8ff | 217 | dac->CH1CTRL &= ~DAC_CH1CTRL_EN; |
bogdanm | 0:9b334a45a8ff | 218 | dac->OPACTRL &= ~DAC_OPACTRL_OPA1EN; |
bogdanm | 0:9b334a45a8ff | 219 | } |
bogdanm | 0:9b334a45a8ff | 220 | else /* OPA2 */ |
bogdanm | 0:9b334a45a8ff | 221 | { |
bogdanm | 0:9b334a45a8ff | 222 | dac->OPACTRL &= ~DAC_OPACTRL_OPA2EN; |
bogdanm | 0:9b334a45a8ff | 223 | } |
bogdanm | 0:9b334a45a8ff | 224 | } |
bogdanm | 0:9b334a45a8ff | 225 | |
bogdanm | 0:9b334a45a8ff | 226 | |
bogdanm | 0:9b334a45a8ff | 227 | /***************************************************************************//** |
bogdanm | 0:9b334a45a8ff | 228 | * @brief |
bogdanm | 0:9b334a45a8ff | 229 | * Configure and enable an Operational Amplifier. |
bogdanm | 0:9b334a45a8ff | 230 | * |
bogdanm | 0:9b334a45a8ff | 231 | * @note |
bogdanm | 0:9b334a45a8ff | 232 | * The value of the alternate output enable bit mask in the OPAMP_Init_TypeDef |
bogdanm | 0:9b334a45a8ff | 233 | * structure should consist of one or more of the |
bogdanm | 0:9b334a45a8ff | 234 | * DAC_OPA[opa#]MUX_OUTPEN_OUT[output#] flags |
bogdanm | 0:9b334a45a8ff | 235 | * (defined in \<part_name\>_dac.h) OR'ed together. @n @n |
bogdanm | 0:9b334a45a8ff | 236 | * For OPA0: |
bogdanm | 0:9b334a45a8ff | 237 | * @li DAC_OPA0MUX_OUTPEN_OUT0 |
bogdanm | 0:9b334a45a8ff | 238 | * @li DAC_OPA0MUX_OUTPEN_OUT1 |
bogdanm | 0:9b334a45a8ff | 239 | * @li DAC_OPA0MUX_OUTPEN_OUT2 |
bogdanm | 0:9b334a45a8ff | 240 | * @li DAC_OPA0MUX_OUTPEN_OUT3 |
bogdanm | 0:9b334a45a8ff | 241 | * @li DAC_OPA0MUX_OUTPEN_OUT4 |
bogdanm | 0:9b334a45a8ff | 242 | * |
bogdanm | 0:9b334a45a8ff | 243 | * For OPA1: |
bogdanm | 0:9b334a45a8ff | 244 | * @li DAC_OPA1MUX_OUTPEN_OUT0 |
bogdanm | 0:9b334a45a8ff | 245 | * @li DAC_OPA1MUX_OUTPEN_OUT1 |
bogdanm | 0:9b334a45a8ff | 246 | * @li DAC_OPA1MUX_OUTPEN_OUT2 |
bogdanm | 0:9b334a45a8ff | 247 | * @li DAC_OPA1MUX_OUTPEN_OUT3 |
bogdanm | 0:9b334a45a8ff | 248 | * @li DAC_OPA1MUX_OUTPEN_OUT4 |
bogdanm | 0:9b334a45a8ff | 249 | * |
bogdanm | 0:9b334a45a8ff | 250 | * For OPA2: |
bogdanm | 0:9b334a45a8ff | 251 | * @li DAC_OPA2MUX_OUTPEN_OUT0 |
bogdanm | 0:9b334a45a8ff | 252 | * @li DAC_OPA2MUX_OUTPEN_OUT1 |
bogdanm | 0:9b334a45a8ff | 253 | * |
bogdanm | 0:9b334a45a8ff | 254 | * E.g: @n |
bogdanm | 0:9b334a45a8ff | 255 | * init.outPen = DAC_OPA0MUX_OUTPEN_OUT0 | DAC_OPA0MUX_OUTPEN_OUT4; |
bogdanm | 0:9b334a45a8ff | 256 | * |
bogdanm | 0:9b334a45a8ff | 257 | * @param[in] dac |
bogdanm | 0:9b334a45a8ff | 258 | * Pointer to DAC peripheral register block. |
bogdanm | 0:9b334a45a8ff | 259 | * |
bogdanm | 0:9b334a45a8ff | 260 | * @param[in] opa |
bogdanm | 0:9b334a45a8ff | 261 | * Selects an OPA, valid vaules are @ref OPA0, @ref OPA1 and @ref OPA2. |
bogdanm | 0:9b334a45a8ff | 262 | * |
bogdanm | 0:9b334a45a8ff | 263 | * @param[in] init |
bogdanm | 0:9b334a45a8ff | 264 | * Pointer to a structure containing OPAMP init information. |
bogdanm | 0:9b334a45a8ff | 265 | ******************************************************************************/ |
mbed_official | 50:a417edff4437 | 266 | void OPAMP_Enable(DAC_TypeDef *dac, OPAMP_TypeDef opa, const OPAMP_Init_TypeDef *init) |
bogdanm | 0:9b334a45a8ff | 267 | { |
bogdanm | 0:9b334a45a8ff | 268 | uint32_t offset; |
bogdanm | 0:9b334a45a8ff | 269 | |
mbed_official | 50:a417edff4437 | 270 | EFM_ASSERT(DAC_REF_VALID(dac)); |
mbed_official | 50:a417edff4437 | 271 | EFM_ASSERT(DAC_OPA_VALID(opa)); |
mbed_official | 50:a417edff4437 | 272 | EFM_ASSERT(init->bias <= (_DAC_BIASPROG_BIASPROG_MASK |
mbed_official | 50:a417edff4437 | 273 | >> _DAC_BIASPROG_BIASPROG_SHIFT)); |
bogdanm | 0:9b334a45a8ff | 274 | |
mbed_official | 50:a417edff4437 | 275 | if (opa == OPA0) |
bogdanm | 0:9b334a45a8ff | 276 | { |
mbed_official | 50:a417edff4437 | 277 | EFM_ASSERT((init->outPen & ~_DAC_OPA0MUX_OUTPEN_MASK) == 0); |
bogdanm | 0:9b334a45a8ff | 278 | |
mbed_official | 50:a417edff4437 | 279 | dac->BIASPROG = (dac->BIASPROG |
mbed_official | 50:a417edff4437 | 280 | & ~(_DAC_BIASPROG_BIASPROG_MASK |
mbed_official | 50:a417edff4437 | 281 | | DAC_BIASPROG_HALFBIAS)) |
mbed_official | 50:a417edff4437 | 282 | | (init->bias << _DAC_BIASPROG_BIASPROG_SHIFT) |
mbed_official | 50:a417edff4437 | 283 | | (init->halfBias ? DAC_BIASPROG_HALFBIAS : 0); |
bogdanm | 0:9b334a45a8ff | 284 | |
mbed_official | 50:a417edff4437 | 285 | if (init->defaultOffset) |
bogdanm | 0:9b334a45a8ff | 286 | { |
mbed_official | 50:a417edff4437 | 287 | offset = SYSTEM_GetCalibrationValue(&dac->CAL); |
mbed_official | 50:a417edff4437 | 288 | dac->CAL = (dac->CAL & ~_DAC_CAL_CH0OFFSET_MASK) |
mbed_official | 50:a417edff4437 | 289 | | (offset & _DAC_CAL_CH0OFFSET_MASK); |
bogdanm | 0:9b334a45a8ff | 290 | } |
bogdanm | 0:9b334a45a8ff | 291 | else |
bogdanm | 0:9b334a45a8ff | 292 | { |
mbed_official | 50:a417edff4437 | 293 | EFM_ASSERT(init->offset <= (_DAC_CAL_CH0OFFSET_MASK |
mbed_official | 50:a417edff4437 | 294 | >> _DAC_CAL_CH0OFFSET_SHIFT)); |
bogdanm | 0:9b334a45a8ff | 295 | |
mbed_official | 50:a417edff4437 | 296 | dac->CAL = (dac->CAL & ~_DAC_CAL_CH0OFFSET_MASK) |
mbed_official | 50:a417edff4437 | 297 | | (init->offset << _DAC_CAL_CH0OFFSET_SHIFT); |
bogdanm | 0:9b334a45a8ff | 298 | } |
bogdanm | 0:9b334a45a8ff | 299 | |
mbed_official | 50:a417edff4437 | 300 | dac->OPA0MUX = (uint32_t)init->resSel |
mbed_official | 50:a417edff4437 | 301 | | (uint32_t)init->outMode |
mbed_official | 50:a417edff4437 | 302 | | init->outPen |
mbed_official | 50:a417edff4437 | 303 | | (uint32_t)init->resInMux |
mbed_official | 50:a417edff4437 | 304 | | (uint32_t)init->negSel |
mbed_official | 50:a417edff4437 | 305 | | (uint32_t)init->posSel |
mbed_official | 50:a417edff4437 | 306 | | ( init->nextOut ? DAC_OPA0MUX_NEXTOUT : 0) |
mbed_official | 50:a417edff4437 | 307 | | ( init->npEn ? DAC_OPA0MUX_NPEN : 0) |
mbed_official | 50:a417edff4437 | 308 | | ( init->ppEn ? DAC_OPA0MUX_PPEN : 0); |
bogdanm | 0:9b334a45a8ff | 309 | |
bogdanm | 0:9b334a45a8ff | 310 | dac->CH0CTRL |= DAC_CH0CTRL_EN; |
mbed_official | 50:a417edff4437 | 311 | dac->OPACTRL = (dac->OPACTRL |
mbed_official | 50:a417edff4437 | 312 | & ~(DAC_OPACTRL_OPA0SHORT |
mbed_official | 50:a417edff4437 | 313 | | _DAC_OPACTRL_OPA0LPFDIS_MASK |
mbed_official | 50:a417edff4437 | 314 | | DAC_OPACTRL_OPA0HCMDIS)) |
mbed_official | 50:a417edff4437 | 315 | | (init->shortInputs ? DAC_OPACTRL_OPA0SHORT : 0) |
mbed_official | 50:a417edff4437 | 316 | | (init->lpfPosPadDisable |
mbed_official | 50:a417edff4437 | 317 | ? DAC_OPACTRL_OPA0LPFDIS_PLPFDIS : 0) |
mbed_official | 50:a417edff4437 | 318 | | (init->lpfNegPadDisable |
mbed_official | 50:a417edff4437 | 319 | ? DAC_OPACTRL_OPA0LPFDIS_NLPFDIS : 0) |
mbed_official | 50:a417edff4437 | 320 | | (init->hcmDisable ? DAC_OPACTRL_OPA0HCMDIS : 0) |
mbed_official | 50:a417edff4437 | 321 | | DAC_OPACTRL_OPA0EN; |
bogdanm | 0:9b334a45a8ff | 322 | } |
bogdanm | 0:9b334a45a8ff | 323 | else if ( opa == OPA1 ) |
bogdanm | 0:9b334a45a8ff | 324 | { |
mbed_official | 50:a417edff4437 | 325 | EFM_ASSERT((init->outPen & ~_DAC_OPA1MUX_OUTPEN_MASK) == 0); |
bogdanm | 0:9b334a45a8ff | 326 | |
mbed_official | 50:a417edff4437 | 327 | dac->BIASPROG = (dac->BIASPROG |
mbed_official | 50:a417edff4437 | 328 | & ~(_DAC_BIASPROG_BIASPROG_MASK |
mbed_official | 50:a417edff4437 | 329 | | DAC_BIASPROG_HALFBIAS)) |
mbed_official | 50:a417edff4437 | 330 | | (init->bias << _DAC_BIASPROG_BIASPROG_SHIFT) |
mbed_official | 50:a417edff4437 | 331 | | (init->halfBias ? DAC_BIASPROG_HALFBIAS : 0 ); |
bogdanm | 0:9b334a45a8ff | 332 | |
mbed_official | 50:a417edff4437 | 333 | if (init->defaultOffset) |
bogdanm | 0:9b334a45a8ff | 334 | { |
mbed_official | 50:a417edff4437 | 335 | offset = SYSTEM_GetCalibrationValue(&dac->CAL); |
mbed_official | 50:a417edff4437 | 336 | dac->CAL = (dac->CAL & ~_DAC_CAL_CH1OFFSET_MASK) |
mbed_official | 50:a417edff4437 | 337 | | (offset & _DAC_CAL_CH1OFFSET_MASK); |
bogdanm | 0:9b334a45a8ff | 338 | } |
bogdanm | 0:9b334a45a8ff | 339 | else |
bogdanm | 0:9b334a45a8ff | 340 | { |
mbed_official | 50:a417edff4437 | 341 | EFM_ASSERT(init->offset <= (_DAC_CAL_CH1OFFSET_MASK |
mbed_official | 50:a417edff4437 | 342 | >> _DAC_CAL_CH1OFFSET_SHIFT)); |
bogdanm | 0:9b334a45a8ff | 343 | |
mbed_official | 50:a417edff4437 | 344 | dac->CAL = (dac->CAL & ~_DAC_CAL_CH1OFFSET_MASK) |
mbed_official | 50:a417edff4437 | 345 | | (init->offset << _DAC_CAL_CH1OFFSET_SHIFT); |
bogdanm | 0:9b334a45a8ff | 346 | } |
bogdanm | 0:9b334a45a8ff | 347 | |
mbed_official | 50:a417edff4437 | 348 | dac->OPA1MUX = (uint32_t)init->resSel |
mbed_official | 50:a417edff4437 | 349 | | (uint32_t)init->outMode |
mbed_official | 50:a417edff4437 | 350 | | init->outPen |
mbed_official | 50:a417edff4437 | 351 | | (uint32_t)init->resInMux |
mbed_official | 50:a417edff4437 | 352 | | (uint32_t)init->negSel |
mbed_official | 50:a417edff4437 | 353 | | (uint32_t)init->posSel |
mbed_official | 50:a417edff4437 | 354 | | (init->nextOut ? DAC_OPA1MUX_NEXTOUT : 0) |
mbed_official | 50:a417edff4437 | 355 | | (init->npEn ? DAC_OPA1MUX_NPEN : 0) |
mbed_official | 50:a417edff4437 | 356 | | (init->ppEn ? DAC_OPA1MUX_PPEN : 0); |
bogdanm | 0:9b334a45a8ff | 357 | |
bogdanm | 0:9b334a45a8ff | 358 | dac->CH1CTRL |= DAC_CH1CTRL_EN; |
mbed_official | 50:a417edff4437 | 359 | dac->OPACTRL = (dac->OPACTRL |
mbed_official | 50:a417edff4437 | 360 | & ~(DAC_OPACTRL_OPA1SHORT |
mbed_official | 50:a417edff4437 | 361 | | _DAC_OPACTRL_OPA1LPFDIS_MASK |
mbed_official | 50:a417edff4437 | 362 | | DAC_OPACTRL_OPA1HCMDIS)) |
mbed_official | 50:a417edff4437 | 363 | | (init->shortInputs ? DAC_OPACTRL_OPA1SHORT : 0) |
mbed_official | 50:a417edff4437 | 364 | | (init->lpfPosPadDisable |
mbed_official | 50:a417edff4437 | 365 | ? DAC_OPACTRL_OPA1LPFDIS_PLPFDIS : 0) |
mbed_official | 50:a417edff4437 | 366 | | (init->lpfNegPadDisable |
mbed_official | 50:a417edff4437 | 367 | ? DAC_OPACTRL_OPA1LPFDIS_NLPFDIS : 0) |
mbed_official | 50:a417edff4437 | 368 | | (init->hcmDisable ? DAC_OPACTRL_OPA1HCMDIS : 0) |
mbed_official | 50:a417edff4437 | 369 | | DAC_OPACTRL_OPA1EN; |
bogdanm | 0:9b334a45a8ff | 370 | } |
bogdanm | 0:9b334a45a8ff | 371 | else /* OPA2 */ |
bogdanm | 0:9b334a45a8ff | 372 | { |
mbed_official | 50:a417edff4437 | 373 | EFM_ASSERT((init->posSel == DAC_OPA2MUX_POSSEL_DISABLE) |
mbed_official | 50:a417edff4437 | 374 | || (init->posSel == DAC_OPA2MUX_POSSEL_POSPAD) |
mbed_official | 50:a417edff4437 | 375 | || (init->posSel == DAC_OPA2MUX_POSSEL_OPA1INP) |
mbed_official | 50:a417edff4437 | 376 | || (init->posSel == DAC_OPA2MUX_POSSEL_OPATAP)); |
bogdanm | 0:9b334a45a8ff | 377 | |
mbed_official | 50:a417edff4437 | 378 | EFM_ASSERT((init->outMode & ~DAC_OPA2MUX_OUTMODE) == 0); |
bogdanm | 0:9b334a45a8ff | 379 | |
mbed_official | 50:a417edff4437 | 380 | EFM_ASSERT((init->outPen & ~_DAC_OPA2MUX_OUTPEN_MASK) == 0); |
bogdanm | 0:9b334a45a8ff | 381 | |
mbed_official | 50:a417edff4437 | 382 | dac->BIASPROG = (dac->BIASPROG |
mbed_official | 50:a417edff4437 | 383 | & ~(_DAC_BIASPROG_OPA2BIASPROG_MASK |
mbed_official | 50:a417edff4437 | 384 | | DAC_BIASPROG_OPA2HALFBIAS)) |
mbed_official | 50:a417edff4437 | 385 | | (init->bias << _DAC_BIASPROG_OPA2BIASPROG_SHIFT) |
mbed_official | 50:a417edff4437 | 386 | | (init->halfBias ? DAC_BIASPROG_OPA2HALFBIAS : 0); |
bogdanm | 0:9b334a45a8ff | 387 | |
mbed_official | 50:a417edff4437 | 388 | if (init->defaultOffset) |
bogdanm | 0:9b334a45a8ff | 389 | { |
mbed_official | 50:a417edff4437 | 390 | offset = SYSTEM_GetCalibrationValue(&dac->OPAOFFSET); |
mbed_official | 50:a417edff4437 | 391 | dac->OPAOFFSET = (dac->OPAOFFSET & ~_DAC_OPAOFFSET_OPA2OFFSET_MASK) |
mbed_official | 50:a417edff4437 | 392 | | (offset & _DAC_OPAOFFSET_OPA2OFFSET_MASK); |
bogdanm | 0:9b334a45a8ff | 393 | } |
bogdanm | 0:9b334a45a8ff | 394 | else |
bogdanm | 0:9b334a45a8ff | 395 | { |
mbed_official | 50:a417edff4437 | 396 | EFM_ASSERT(init->offset <= (_DAC_OPAOFFSET_OPA2OFFSET_MASK |
mbed_official | 50:a417edff4437 | 397 | >> _DAC_OPAOFFSET_OPA2OFFSET_SHIFT)); |
mbed_official | 50:a417edff4437 | 398 | dac->OPAOFFSET = (dac->OPAOFFSET & ~_DAC_OPAOFFSET_OPA2OFFSET_MASK) |
mbed_official | 50:a417edff4437 | 399 | | (init->offset << _DAC_OPAOFFSET_OPA2OFFSET_SHIFT); |
bogdanm | 0:9b334a45a8ff | 400 | } |
bogdanm | 0:9b334a45a8ff | 401 | |
mbed_official | 50:a417edff4437 | 402 | dac->OPA2MUX = (uint32_t)init->resSel |
mbed_official | 50:a417edff4437 | 403 | | (uint32_t)init->outMode |
mbed_official | 50:a417edff4437 | 404 | | init->outPen |
mbed_official | 50:a417edff4437 | 405 | | (uint32_t)init->resInMux |
mbed_official | 50:a417edff4437 | 406 | | (uint32_t)init->negSel |
mbed_official | 50:a417edff4437 | 407 | | (uint32_t)init->posSel |
mbed_official | 50:a417edff4437 | 408 | | ( init->nextOut ? DAC_OPA2MUX_NEXTOUT : 0 ) |
mbed_official | 50:a417edff4437 | 409 | | ( init->npEn ? DAC_OPA2MUX_NPEN : 0 ) |
mbed_official | 50:a417edff4437 | 410 | | ( init->ppEn ? DAC_OPA2MUX_PPEN : 0 ); |
bogdanm | 0:9b334a45a8ff | 411 | |
mbed_official | 50:a417edff4437 | 412 | dac->OPACTRL = (dac->OPACTRL |
mbed_official | 50:a417edff4437 | 413 | & ~(DAC_OPACTRL_OPA2SHORT |
mbed_official | 50:a417edff4437 | 414 | | _DAC_OPACTRL_OPA2LPFDIS_MASK |
mbed_official | 50:a417edff4437 | 415 | | DAC_OPACTRL_OPA2HCMDIS)) |
mbed_official | 50:a417edff4437 | 416 | | (init->shortInputs ? DAC_OPACTRL_OPA2SHORT : 0) |
mbed_official | 50:a417edff4437 | 417 | | (init->lpfPosPadDisable |
mbed_official | 50:a417edff4437 | 418 | ? DAC_OPACTRL_OPA2LPFDIS_PLPFDIS : 0) |
mbed_official | 50:a417edff4437 | 419 | | (init->lpfNegPadDisable |
mbed_official | 50:a417edff4437 | 420 | ? DAC_OPACTRL_OPA2LPFDIS_NLPFDIS : 0) |
mbed_official | 50:a417edff4437 | 421 | | (init->hcmDisable ? DAC_OPACTRL_OPA2HCMDIS : 0) |
mbed_official | 50:a417edff4437 | 422 | | DAC_OPACTRL_OPA2EN; |
bogdanm | 0:9b334a45a8ff | 423 | } |
bogdanm | 0:9b334a45a8ff | 424 | } |
bogdanm | 0:9b334a45a8ff | 425 | |
bogdanm | 0:9b334a45a8ff | 426 | /** @} (end addtogroup OPAMP) */ |
bogdanm | 0:9b334a45a8ff | 427 | /** @} (end addtogroup EM_Library) */ |
bogdanm | 0:9b334a45a8ff | 428 | |
bogdanm | 0:9b334a45a8ff | 429 | #endif /* defined( OPAMP_PRESENT ) && ( OPAMP_COUNT == 1 ) */ |