Team DIANA / mbed-src

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Dependents:   MX106-finaltest

Fork of mbed-src by mbed official

targets/hal/TARGET_Maxim/TARGET_MAX32600/analogout_api.c@514:7668256dbe61, 2015-04-16 (annotated)

Committer:
mbed_official
Date:
Thu Apr 16 11:45:13 2015 +0100
Revision:
514:7668256dbe61
Synchronized with git revision 29ab478a78892415a3c721cdc20b1755b7b01ba1



Full URL: https://github.com/mbedmicro/mbed/commit/29ab478a78892415a3c721cdc20b1755b7b01ba1/



LPC824, SSCI824 - Add GCC_ARM exporter support

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 514:7668256dbe61 1 /*******************************************************************************
mbed_official 514:7668256dbe61 2 * Copyright (C) 2015 Maxim Integrated Products, Inc., All Rights Reserved.
mbed_official 514:7668256dbe61 3 *
mbed_official 514:7668256dbe61 4 * Permission is hereby granted, free of charge, to any person obtaining a
mbed_official 514:7668256dbe61 5 * copy of this software and associated documentation files (the "Software"),
mbed_official 514:7668256dbe61 6 * to deal in the Software without restriction, including without limitation
mbed_official 514:7668256dbe61 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
mbed_official 514:7668256dbe61 8 * and/or sell copies of the Software, and to permit persons to whom the
mbed_official 514:7668256dbe61 9 * Software is furnished to do so, subject to the following conditions:
mbed_official 514:7668256dbe61 10 *
mbed_official 514:7668256dbe61 11 * The above copyright notice and this permission notice shall be included
mbed_official 514:7668256dbe61 12 * in all copies or substantial portions of the Software.
mbed_official 514:7668256dbe61 13 *
mbed_official 514:7668256dbe61 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
mbed_official 514:7668256dbe61 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
mbed_official 514:7668256dbe61 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
mbed_official 514:7668256dbe61 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
mbed_official 514:7668256dbe61 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
mbed_official 514:7668256dbe61 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
mbed_official 514:7668256dbe61 20 * OTHER DEALINGS IN THE SOFTWARE.
mbed_official 514:7668256dbe61 21 *
mbed_official 514:7668256dbe61 22 * Except as contained in this notice, the name of Maxim Integrated
mbed_official 514:7668256dbe61 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
mbed_official 514:7668256dbe61 24 * Products, Inc. Branding Policy.
mbed_official 514:7668256dbe61 25 *
mbed_official 514:7668256dbe61 26 * The mere transfer of this software does not imply any licenses
mbed_official 514:7668256dbe61 27 * of trade secrets, proprietary technology, copyrights, patents,
mbed_official 514:7668256dbe61 28 * trademarks, maskwork rights, or any other form of intellectual
mbed_official 514:7668256dbe61 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
mbed_official 514:7668256dbe61 30 * ownership rights.
mbed_official 514:7668256dbe61 31 *******************************************************************************
mbed_official 514:7668256dbe61 32 */
mbed_official 514:7668256dbe61 33
mbed_official 514:7668256dbe61 34 #include "mbed_assert.h"
mbed_official 514:7668256dbe61 35 #include "analogout_api.h"
mbed_official 514:7668256dbe61 36 #include "clkman_regs.h"
mbed_official 514:7668256dbe61 37 #include "pwrman_regs.h"
mbed_official 514:7668256dbe61 38 #include "afe_regs.h"
mbed_official 514:7668256dbe61 39 #include "PeripheralPins.h"
mbed_official 514:7668256dbe61 40
mbed_official 514:7668256dbe61 41 //******************************************************************************
mbed_official 514:7668256dbe61 42 void analogout_init(dac_t *obj, PinName pin)
mbed_official 514:7668256dbe61 43 {
mbed_official 514:7668256dbe61 44 // Make sure pin is an analog pin we can use for ADC
mbed_official 514:7668256dbe61 45 DACName dac = (DACName)pinmap_peripheral(pin, PinMap_DAC);
mbed_official 514:7668256dbe61 46 MBED_ASSERT((DACName)dac != (DACName)NC);
mbed_official 514:7668256dbe61 47
mbed_official 514:7668256dbe61 48 // Set the object pointer
mbed_official 514:7668256dbe61 49 obj->dac = ((mxc_dac_regs_t*)MXC_DAC_GET_DAC((pin & 0x3)));
mbed_official 514:7668256dbe61 50 obj->dac_fifo = ((mxc_dac_fifo_t*)MXC_DAC_GET_FIFO((pin & 0x3)));
mbed_official 514:7668256dbe61 51 obj->index = (pin & 0x3);
mbed_official 514:7668256dbe61 52
mbed_official 514:7668256dbe61 53 // Set the ADC clock to the system clock frequency
mbed_official 514:7668256dbe61 54 MXC_SET_FIELD(&MXC_CLKMAN->clk_ctrl, MXC_F_CLKMAN_CLK_CTRL_ADC_SOURCE_SELECT,
mbed_official 514:7668256dbe61 55 (MXC_F_CLKMAN_CLK_CTRL_ADC_GATE_N | (MXC_E_CLKMAN_ADC_SOURCE_SELECT_SYSTEM <<
mbed_official 514:7668256dbe61 56 MXC_F_CLKMAN_CLK_CTRL_ADC_SOURCE_SELECT_POS)));
mbed_official 514:7668256dbe61 57
mbed_official 514:7668256dbe61 58
mbed_official 514:7668256dbe61 59 // Setup the OPAMP in follower mode
mbed_official 514:7668256dbe61 60 switch(obj->index) {
mbed_official 514:7668256dbe61 61 case 0:
mbed_official 514:7668256dbe61 62 // Enable DAC clock
mbed_official 514:7668256dbe61 63 MXC_CLKMAN->clk_ctrl_14_dac0 = MXC_E_CLKMAN_CLK_SCALE_ENABLED;
mbed_official 514:7668256dbe61 64
mbed_official 514:7668256dbe61 65 // Enable OPAMP
mbed_official 514:7668256dbe61 66 MXC_AFE->ctrl5 &= ~MXC_F_AFE_CTRL5_OP_CMP0;
mbed_official 514:7668256dbe61 67
mbed_official 514:7668256dbe61 68 // Set the positive and negative inputs
mbed_official 514:7668256dbe61 69 MXC_SET_FIELD(&MXC_AFE->ctrl4, (MXC_F_AFE_CTRL4_DAC_SEL_A |
mbed_official 514:7668256dbe61 70 MXC_F_AFE_CTRL4_P_IN_SEL_OPAMP0 | MXC_F_AFE_CTRL4_N_IN_SEL_OPAMP0),
mbed_official 514:7668256dbe61 71 ((0x1 << MXC_F_AFE_CTRL4_P_IN_SEL_OPAMP0_POS) |
mbed_official 514:7668256dbe61 72 (0x1 << MXC_F_AFE_CTRL4_N_IN_SEL_OPAMP0_POS) |
mbed_official 514:7668256dbe61 73 (0x0 << MXC_F_AFE_CTRL4_DAC_SEL_A_POS)));
mbed_official 514:7668256dbe61 74
mbed_official 514:7668256dbe61 75 // Enable N and P channel inputs
mbed_official 514:7668256dbe61 76 MXC_AFE->ctrl3 |= (MXC_F_AFE_CTRL3_EN_PCH_OPAMP0 |
mbed_official 514:7668256dbe61 77 MXC_F_AFE_CTRL3_EN_NCH_OPAMP0);
mbed_official 514:7668256dbe61 78 break;
mbed_official 514:7668256dbe61 79 case 1:
mbed_official 514:7668256dbe61 80 // Enable DAC clock
mbed_official 514:7668256dbe61 81 MXC_CLKMAN->clk_ctrl_15_dac1 = MXC_E_CLKMAN_CLK_SCALE_ENABLED;
mbed_official 514:7668256dbe61 82
mbed_official 514:7668256dbe61 83 // Enable OPAMP
mbed_official 514:7668256dbe61 84 MXC_AFE->ctrl5 &= ~MXC_F_AFE_CTRL5_OP_CMP1;
mbed_official 514:7668256dbe61 85
mbed_official 514:7668256dbe61 86 // Set the positive and negative inputs
mbed_official 514:7668256dbe61 87 MXC_SET_FIELD(&MXC_AFE->ctrl4, (MXC_F_AFE_CTRL4_DAC_SEL_B |
mbed_official 514:7668256dbe61 88 MXC_F_AFE_CTRL4_P_IN_SEL_OPAMP1 | MXC_F_AFE_CTRL4_N_IN_SEL_OPAMP1),
mbed_official 514:7668256dbe61 89 ((0x1 << MXC_F_AFE_CTRL4_P_IN_SEL_OPAMP1_POS) |
mbed_official 514:7668256dbe61 90 (0x1 << MXC_F_AFE_CTRL4_N_IN_SEL_OPAMP1_POS) |
mbed_official 514:7668256dbe61 91 (0x1 << MXC_F_AFE_CTRL4_DAC_SEL_B_POS)));
mbed_official 514:7668256dbe61 92
mbed_official 514:7668256dbe61 93 // Enable N and P channel inputs
mbed_official 514:7668256dbe61 94 MXC_AFE->ctrl3 |= (MXC_F_AFE_CTRL3_EN_PCH_OPAMP1 |
mbed_official 514:7668256dbe61 95 MXC_F_AFE_CTRL3_EN_NCH_OPAMP1);
mbed_official 514:7668256dbe61 96
mbed_official 514:7668256dbe61 97 break;
mbed_official 514:7668256dbe61 98 case 2:
mbed_official 514:7668256dbe61 99 // Enable DAC clock
mbed_official 514:7668256dbe61 100 MXC_CLKMAN->clk_ctrl_16_dac2 = MXC_E_CLKMAN_CLK_SCALE_ENABLED;
mbed_official 514:7668256dbe61 101
mbed_official 514:7668256dbe61 102 // Enable OPAMP
mbed_official 514:7668256dbe61 103 MXC_AFE->ctrl5 &= ~MXC_F_AFE_CTRL5_OP_CMP2;
mbed_official 514:7668256dbe61 104
mbed_official 514:7668256dbe61 105 // Set the positive and negative inputs
mbed_official 514:7668256dbe61 106 MXC_SET_FIELD(&MXC_AFE->ctrl4, (MXC_F_AFE_CTRL4_DAC_SEL_C |
mbed_official 514:7668256dbe61 107 MXC_F_AFE_CTRL4_P_IN_SEL_OPAMP2 | MXC_F_AFE_CTRL4_N_IN_SEL_OPAMP2),
mbed_official 514:7668256dbe61 108 ((0x1 << MXC_F_AFE_CTRL4_P_IN_SEL_OPAMP2_POS) |
mbed_official 514:7668256dbe61 109 (0x1 << MXC_F_AFE_CTRL4_N_IN_SEL_OPAMP2_POS) |
mbed_official 514:7668256dbe61 110 (0x2 << MXC_F_AFE_CTRL4_DAC_SEL_C_POS)));
mbed_official 514:7668256dbe61 111
mbed_official 514:7668256dbe61 112 // Enable N and P channel inputs
mbed_official 514:7668256dbe61 113 MXC_AFE->ctrl3 |= (MXC_F_AFE_CTRL3_EN_PCH_OPAMP2 |
mbed_official 514:7668256dbe61 114 MXC_F_AFE_CTRL3_EN_NCH_OPAMP2);
mbed_official 514:7668256dbe61 115 break;
mbed_official 514:7668256dbe61 116 case 3:
mbed_official 514:7668256dbe61 117 // Enable DAC clock
mbed_official 514:7668256dbe61 118 MXC_CLKMAN->clk_ctrl_17_dac3 = MXC_E_CLKMAN_CLK_SCALE_ENABLED;
mbed_official 514:7668256dbe61 119
mbed_official 514:7668256dbe61 120 // Enable OPAMP
mbed_official 514:7668256dbe61 121 MXC_AFE->ctrl5 &= ~MXC_F_AFE_CTRL5_OP_CMP3;
mbed_official 514:7668256dbe61 122
mbed_official 514:7668256dbe61 123 // Set the positive and negative inputs
mbed_official 514:7668256dbe61 124 MXC_SET_FIELD(&MXC_AFE->ctrl4, (MXC_F_AFE_CTRL4_DAC_SEL_D |
mbed_official 514:7668256dbe61 125 MXC_F_AFE_CTRL4_P_IN_SEL_OPAMP3 | MXC_F_AFE_CTRL4_N_IN_SEL_OPAMP3),
mbed_official 514:7668256dbe61 126 ((0x1 << MXC_F_AFE_CTRL4_P_IN_SEL_OPAMP3_POS) |
mbed_official 514:7668256dbe61 127 (0x1 << MXC_F_AFE_CTRL4_N_IN_SEL_OPAMP3_POS) |
mbed_official 514:7668256dbe61 128 (0x3 << MXC_F_AFE_CTRL4_DAC_SEL_D_POS)));
mbed_official 514:7668256dbe61 129
mbed_official 514:7668256dbe61 130 // Enable N and P channel inputs
mbed_official 514:7668256dbe61 131 MXC_AFE->ctrl3 |= (MXC_F_AFE_CTRL3_EN_PCH_OPAMP3 |
mbed_official 514:7668256dbe61 132 MXC_F_AFE_CTRL3_EN_NCH_OPAMP3);
mbed_official 514:7668256dbe61 133 break;
mbed_official 514:7668256dbe61 134 }
mbed_official 514:7668256dbe61 135
mbed_official 514:7668256dbe61 136 // Enable AFE power
mbed_official 514:7668256dbe61 137 MXC_PWRMAN->pwr_rst_ctrl |= MXC_F_PWRMAN_PWR_RST_CTRL_AFE_POWERED;
mbed_official 514:7668256dbe61 138
mbed_official 514:7668256dbe61 139 // Setup internal voltage references
mbed_official 514:7668256dbe61 140 MXC_SET_FIELD(&MXC_AFE->ctrl1, (MXC_F_AFE_CTRL1_REF_DAC_VOLT_SEL | MXC_F_AFE_CTRL1_REF_ADC_VOLT_SEL),
mbed_official 514:7668256dbe61 141 (MXC_F_AFE_CTRL1_REF_ADC_POWERUP | MXC_F_AFE_CTRL1_REF_BLK_POWERUP |
mbed_official 514:7668256dbe61 142 (MXC_E_AFE_REF_VOLT_SEL_1500 << MXC_F_AFE_CTRL1_REF_ADC_VOLT_SEL_POS)));
mbed_official 514:7668256dbe61 143
mbed_official 514:7668256dbe61 144 // Disable interpolation
mbed_official 514:7668256dbe61 145 obj->dac->ctrl0 &= MXC_F_DAC_CTRL0_INTERP_MODE;
mbed_official 514:7668256dbe61 146 }
mbed_official 514:7668256dbe61 147
mbed_official 514:7668256dbe61 148 //******************************************************************************
mbed_official 514:7668256dbe61 149 void analogout_write(dac_t *obj, float value)
mbed_official 514:7668256dbe61 150 {
mbed_official 514:7668256dbe61 151 analogout_write_u16(obj, (uint16_t)((value/1.0) * 0xFFFF));
mbed_official 514:7668256dbe61 152 }
mbed_official 514:7668256dbe61 153
mbed_official 514:7668256dbe61 154 //******************************************************************************
mbed_official 514:7668256dbe61 155 void analogout_write_u16(dac_t *obj, uint16_t value)
mbed_official 514:7668256dbe61 156 {
mbed_official 514:7668256dbe61 157 // Enable the OPAMP
mbed_official 514:7668256dbe61 158 // Setup the OPAMP in follower mode
mbed_official 514:7668256dbe61 159 switch(obj->index) {
mbed_official 514:7668256dbe61 160 case 0:
mbed_official 514:7668256dbe61 161 MXC_AFE->ctrl3 |= MXC_F_AFE_CTRL3_POWERUP_OPAMP0;
mbed_official 514:7668256dbe61 162 break;
mbed_official 514:7668256dbe61 163 case 1:
mbed_official 514:7668256dbe61 164 MXC_AFE->ctrl3 |= MXC_F_AFE_CTRL3_POWERUP_OPAMP1;
mbed_official 514:7668256dbe61 165 break;
mbed_official 514:7668256dbe61 166 case 2:
mbed_official 514:7668256dbe61 167 MXC_AFE->ctrl3 |= MXC_F_AFE_CTRL3_POWERUP_OPAMP2;
mbed_official 514:7668256dbe61 168 break;
mbed_official 514:7668256dbe61 169 case 3:
mbed_official 514:7668256dbe61 170 MXC_AFE->ctrl3 |= MXC_F_AFE_CTRL3_POWERUP_OPAMP3;
mbed_official 514:7668256dbe61 171 break;
mbed_official 514:7668256dbe61 172 }
mbed_official 514:7668256dbe61 173
mbed_official 514:7668256dbe61 174 // Output 1 sample with minimal delay
mbed_official 514:7668256dbe61 175 obj->dac->rate |= 0x1;
mbed_official 514:7668256dbe61 176
mbed_official 514:7668256dbe61 177 // Set the start mode to output once data is in the FIFO
mbed_official 514:7668256dbe61 178 obj->dac->ctrl0 &= ~(MXC_F_DAC_CTRL0_START_MODE | MXC_F_DAC_CTRL0_OP_MODE);
mbed_official 514:7668256dbe61 179
mbed_official 514:7668256dbe61 180 // Enable the DAC
mbed_official 514:7668256dbe61 181 obj->dac->ctrl0 |= (MXC_F_DAC_CTRL0_POWER_MODE_2 |
mbed_official 514:7668256dbe61 182 MXC_F_DAC_CTRL0_POWER_MODE_1_0 | MXC_F_DAC_CTRL0_POWER_ON |
mbed_official 514:7668256dbe61 183 MXC_F_DAC_CTRL0_CLOCK_GATE_EN | MXC_F_DAC_CTRL0_CPU_START);
mbed_official 514:7668256dbe61 184
mbed_official 514:7668256dbe61 185 if(obj->index < 2) {
mbed_official 514:7668256dbe61 186 obj->out = (value);
mbed_official 514:7668256dbe61 187 obj->dac_fifo->output_16 = (obj->out);
mbed_official 514:7668256dbe61 188
mbed_official 514:7668256dbe61 189 } else {
mbed_official 514:7668256dbe61 190 // Convert 16 bits to 8 bits
mbed_official 514:7668256dbe61 191 obj->out = (value >> 8);
mbed_official 514:7668256dbe61 192 obj->dac_fifo->output_8 = (obj->out);
mbed_official 514:7668256dbe61 193 }
mbed_official 514:7668256dbe61 194 }
mbed_official 514:7668256dbe61 195
mbed_official 514:7668256dbe61 196 //******************************************************************************
mbed_official 514:7668256dbe61 197 float analogout_read(dac_t *obj)
mbed_official 514:7668256dbe61 198 {
mbed_official 514:7668256dbe61 199 return (((float)analogout_read_u16(obj) / (float)0xFFFF) * 1.5);
mbed_official 514:7668256dbe61 200 }
mbed_official 514:7668256dbe61 201
mbed_official 514:7668256dbe61 202 //******************************************************************************
mbed_official 514:7668256dbe61 203 uint16_t analogout_read_u16(dac_t *obj)
mbed_official 514:7668256dbe61 204 {
mbed_official 514:7668256dbe61 205 if(obj->index < 2) {
mbed_official 514:7668256dbe61 206 // Convert 12 bits to 16 bits
mbed_official 514:7668256dbe61 207 return (obj->out << 4);
mbed_official 514:7668256dbe61 208 } else {
mbed_official 514:7668256dbe61 209 // Convert 8 bits to 16 bits
mbed_official 514:7668256dbe61 210 return (obj->out << 8);
mbed_official 514:7668256dbe61 211 }
mbed_official 514:7668256dbe61 212 }