ON Semiconductor / mbed-os

5.2.1 - Updated I2C files

Dependents:   mbed-TFT-example-NCS36510 mbed-Accelerometer-example-NCS36510 mbed-Accelerometer-example-NCS36510

targets/TARGET_Maxim/TARGET_MAX32610/analogout_api.c@1:f30bdcd2b33b, 2017-02-27 (annotated)

Committer:
jacobjohnson
Date:
Mon Feb 27 17:45:05 2017 +0000
Revision:
1:f30bdcd2b33b
Parent:
0:098463de4c5d 
changed the inputscale from 1 to 7 in analogin_api.c.  This will need to be changed later, and accessed from the main level, but for now this allows the  adc to read a value from 0 to 3.7V, instead of just up to 1V.;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
group-onsemi 0:098463de4c5d 1 /*******************************************************************************
group-onsemi 0:098463de4c5d 2 * Copyright (C) 2015 Maxim Integrated Products, Inc., All Rights Reserved.
group-onsemi 0:098463de4c5d 3 *
group-onsemi 0:098463de4c5d 4 * Permission is hereby granted, free of charge, to any person obtaining a
group-onsemi 0:098463de4c5d 5 * copy of this software and associated documentation files (the "Software"),
group-onsemi 0:098463de4c5d 6 * to deal in the Software without restriction, including without limitation
group-onsemi 0:098463de4c5d 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
group-onsemi 0:098463de4c5d 8 * and/or sell copies of the Software, and to permit persons to whom the
group-onsemi 0:098463de4c5d 9 * Software is furnished to do so, subject to the following conditions:
group-onsemi 0:098463de4c5d 10 *
group-onsemi 0:098463de4c5d 11 * The above copyright notice and this permission notice shall be included
group-onsemi 0:098463de4c5d 12 * in all copies or substantial portions of the Software.
group-onsemi 0:098463de4c5d 13 *
group-onsemi 0:098463de4c5d 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
group-onsemi 0:098463de4c5d 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
group-onsemi 0:098463de4c5d 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
group-onsemi 0:098463de4c5d 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
group-onsemi 0:098463de4c5d 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
group-onsemi 0:098463de4c5d 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
group-onsemi 0:098463de4c5d 20 * OTHER DEALINGS IN THE SOFTWARE.
group-onsemi 0:098463de4c5d 21 *
group-onsemi 0:098463de4c5d 22 * Except as contained in this notice, the name of Maxim Integrated
group-onsemi 0:098463de4c5d 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
group-onsemi 0:098463de4c5d 24 * Products, Inc. Branding Policy.
group-onsemi 0:098463de4c5d 25 *
group-onsemi 0:098463de4c5d 26 * The mere transfer of this software does not imply any licenses
group-onsemi 0:098463de4c5d 27 * of trade secrets, proprietary technology, copyrights, patents,
group-onsemi 0:098463de4c5d 28 * trademarks, maskwork rights, or any other form of intellectual
group-onsemi 0:098463de4c5d 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
group-onsemi 0:098463de4c5d 30 * ownership rights.
group-onsemi 0:098463de4c5d 31 *******************************************************************************
group-onsemi 0:098463de4c5d 32 */
group-onsemi 0:098463de4c5d 33
group-onsemi 0:098463de4c5d 34 #include "mbed_assert.h"
group-onsemi 0:098463de4c5d 35 #include "analogout_api.h"
group-onsemi 0:098463de4c5d 36 #include "clkman_regs.h"
group-onsemi 0:098463de4c5d 37 #include "pwrman_regs.h"
group-onsemi 0:098463de4c5d 38 #include "afe_regs.h"
group-onsemi 0:098463de4c5d 39 #include "PeripheralPins.h"
group-onsemi 0:098463de4c5d 40
group-onsemi 0:098463de4c5d 41 //******************************************************************************
group-onsemi 0:098463de4c5d 42 void analogout_init(dac_t *obj, PinName pin)
group-onsemi 0:098463de4c5d 43 {
group-onsemi 0:098463de4c5d 44 // Make sure pin is an analog pin we can use for ADC
group-onsemi 0:098463de4c5d 45 DACName dac = (DACName)pinmap_peripheral(pin, PinMap_DAC);
group-onsemi 0:098463de4c5d 46 MBED_ASSERT((DACName)dac != (DACName)NC);
group-onsemi 0:098463de4c5d 47
group-onsemi 0:098463de4c5d 48 // Set the object pointer
group-onsemi 0:098463de4c5d 49 obj->dac = ((mxc_dac_regs_t*)MXC_DAC_GET_DAC((pin & 0x3)));
group-onsemi 0:098463de4c5d 50 obj->dac_fifo = ((mxc_dac_fifo_regs_t*)MXC_DAC_GET_FIFO((pin & 0x3)));
group-onsemi 0:098463de4c5d 51 obj->index = (pin & 0x3);
group-onsemi 0:098463de4c5d 52
group-onsemi 0:098463de4c5d 53 // Set the ADC clock to the system clock frequency
group-onsemi 0:098463de4c5d 54 MXC_SET_FIELD(&MXC_CLKMAN->clk_ctrl, MXC_F_CLKMAN_CLK_CTRL_ADC_SOURCE_SELECT,
group-onsemi 0:098463de4c5d 55 (MXC_F_CLKMAN_CLK_CTRL_ADC_GATE_N | (MXC_E_CLKMAN_ADC_SOURCE_SELECT_SYSTEM <<
group-onsemi 0:098463de4c5d 56 MXC_F_CLKMAN_CLK_CTRL_ADC_SOURCE_SELECT_POS)));
group-onsemi 0:098463de4c5d 57
group-onsemi 0:098463de4c5d 58
group-onsemi 0:098463de4c5d 59 // Setup the OPAMP in follower mode
group-onsemi 0:098463de4c5d 60 switch(obj->index) {
group-onsemi 0:098463de4c5d 61 case 0:
group-onsemi 0:098463de4c5d 62 // Enable DAC clock
group-onsemi 0:098463de4c5d 63 MXC_CLKMAN->clk_ctrl_14_dac0 = MXC_E_CLKMAN_CLK_SCALE_ENABLED;
group-onsemi 0:098463de4c5d 64
group-onsemi 0:098463de4c5d 65 // Enable OPAMP
group-onsemi 0:098463de4c5d 66 MXC_AFE->ctrl5 &= ~MXC_F_AFE_CTRL5_OP_CMP0;
group-onsemi 0:098463de4c5d 67
group-onsemi 0:098463de4c5d 68 // Set the positive and negative inputs
group-onsemi 0:098463de4c5d 69 MXC_SET_FIELD(&MXC_AFE->ctrl4, (MXC_F_AFE_CTRL4_DAC_SEL_A |
group-onsemi 0:098463de4c5d 70 MXC_F_AFE_CTRL4_P_IN_SEL_OPAMP0 | MXC_F_AFE_CTRL4_N_IN_SEL_OPAMP0),
group-onsemi 0:098463de4c5d 71 ((0x1 << MXC_F_AFE_CTRL4_P_IN_SEL_OPAMP0_POS) |
group-onsemi 0:098463de4c5d 72 (0x1 << MXC_F_AFE_CTRL4_N_IN_SEL_OPAMP0_POS) |
group-onsemi 0:098463de4c5d 73 (0x0 << MXC_F_AFE_CTRL4_DAC_SEL_A_POS)));
group-onsemi 0:098463de4c5d 74
group-onsemi 0:098463de4c5d 75 // Enable N and P channel inputs
group-onsemi 0:098463de4c5d 76 MXC_AFE->ctrl3 |= (MXC_F_AFE_CTRL3_EN_PCH_OPAMP0 |
group-onsemi 0:098463de4c5d 77 MXC_F_AFE_CTRL3_EN_NCH_OPAMP0);
group-onsemi 0:098463de4c5d 78 break;
group-onsemi 0:098463de4c5d 79 case 1:
group-onsemi 0:098463de4c5d 80 // Enable DAC clock
group-onsemi 0:098463de4c5d 81 MXC_CLKMAN->clk_ctrl_15_dac1 = MXC_E_CLKMAN_CLK_SCALE_ENABLED;
group-onsemi 0:098463de4c5d 82
group-onsemi 0:098463de4c5d 83 // Enable OPAMP
group-onsemi 0:098463de4c5d 84 MXC_AFE->ctrl5 &= ~MXC_F_AFE_CTRL5_OP_CMP1;
group-onsemi 0:098463de4c5d 85
group-onsemi 0:098463de4c5d 86 // Set the positive and negative inputs
group-onsemi 0:098463de4c5d 87 MXC_SET_FIELD(&MXC_AFE->ctrl4, (MXC_F_AFE_CTRL4_DAC_SEL_B |
group-onsemi 0:098463de4c5d 88 MXC_F_AFE_CTRL4_P_IN_SEL_OPAMP1 | MXC_F_AFE_CTRL4_N_IN_SEL_OPAMP1),
group-onsemi 0:098463de4c5d 89 ((0x1 << MXC_F_AFE_CTRL4_P_IN_SEL_OPAMP1_POS) |
group-onsemi 0:098463de4c5d 90 (0x1 << MXC_F_AFE_CTRL4_N_IN_SEL_OPAMP1_POS) |
group-onsemi 0:098463de4c5d 91 (0x1 << MXC_F_AFE_CTRL4_DAC_SEL_B_POS)));
group-onsemi 0:098463de4c5d 92
group-onsemi 0:098463de4c5d 93 // Enable N and P channel inputs
group-onsemi 0:098463de4c5d 94 MXC_AFE->ctrl3 |= (MXC_F_AFE_CTRL3_EN_PCH_OPAMP1 |
group-onsemi 0:098463de4c5d 95 MXC_F_AFE_CTRL3_EN_NCH_OPAMP1);
group-onsemi 0:098463de4c5d 96
group-onsemi 0:098463de4c5d 97 break;
group-onsemi 0:098463de4c5d 98 case 2:
group-onsemi 0:098463de4c5d 99 // Enable DAC clock
group-onsemi 0:098463de4c5d 100 MXC_CLKMAN->clk_ctrl_16_dac2 = MXC_E_CLKMAN_CLK_SCALE_ENABLED;
group-onsemi 0:098463de4c5d 101
group-onsemi 0:098463de4c5d 102 // Enable OPAMP
group-onsemi 0:098463de4c5d 103 MXC_AFE->ctrl5 &= ~MXC_F_AFE_CTRL5_OP_CMP2;
group-onsemi 0:098463de4c5d 104
group-onsemi 0:098463de4c5d 105 // Set the positive and negative inputs
group-onsemi 0:098463de4c5d 106 MXC_SET_FIELD(&MXC_AFE->ctrl4, (MXC_F_AFE_CTRL4_DAC_SEL_C |
group-onsemi 0:098463de4c5d 107 MXC_F_AFE_CTRL4_P_IN_SEL_OPAMP2 | MXC_F_AFE_CTRL4_N_IN_SEL_OPAMP2),
group-onsemi 0:098463de4c5d 108 ((0x1 << MXC_F_AFE_CTRL4_P_IN_SEL_OPAMP2_POS) |
group-onsemi 0:098463de4c5d 109 (0x1 << MXC_F_AFE_CTRL4_N_IN_SEL_OPAMP2_POS) |
group-onsemi 0:098463de4c5d 110 (0x2 << MXC_F_AFE_CTRL4_DAC_SEL_C_POS)));
group-onsemi 0:098463de4c5d 111
group-onsemi 0:098463de4c5d 112 // Enable N and P channel inputs
group-onsemi 0:098463de4c5d 113 MXC_AFE->ctrl3 |= (MXC_F_AFE_CTRL3_EN_PCH_OPAMP2 |
group-onsemi 0:098463de4c5d 114 MXC_F_AFE_CTRL3_EN_NCH_OPAMP2);
group-onsemi 0:098463de4c5d 115 break;
group-onsemi 0:098463de4c5d 116 case 3:
group-onsemi 0:098463de4c5d 117 // Enable DAC clock
group-onsemi 0:098463de4c5d 118 MXC_CLKMAN->clk_ctrl_17_dac3 = MXC_E_CLKMAN_CLK_SCALE_ENABLED;
group-onsemi 0:098463de4c5d 119
group-onsemi 0:098463de4c5d 120 // Enable OPAMP
group-onsemi 0:098463de4c5d 121 MXC_AFE->ctrl5 &= ~MXC_F_AFE_CTRL5_OP_CMP3;
group-onsemi 0:098463de4c5d 122
group-onsemi 0:098463de4c5d 123 // Set the positive and negative inputs
group-onsemi 0:098463de4c5d 124 MXC_SET_FIELD(&MXC_AFE->ctrl4, (MXC_F_AFE_CTRL4_DAC_SEL_D |
group-onsemi 0:098463de4c5d 125 MXC_F_AFE_CTRL4_P_IN_SEL_OPAMP3 | MXC_F_AFE_CTRL4_N_IN_SEL_OPAMP3),
group-onsemi 0:098463de4c5d 126 ((0x1 << MXC_F_AFE_CTRL4_P_IN_SEL_OPAMP3_POS) |
group-onsemi 0:098463de4c5d 127 (0x1 << MXC_F_AFE_CTRL4_N_IN_SEL_OPAMP3_POS) |
group-onsemi 0:098463de4c5d 128 (0x3 << MXC_F_AFE_CTRL4_DAC_SEL_D_POS)));
group-onsemi 0:098463de4c5d 129
group-onsemi 0:098463de4c5d 130 // Enable N and P channel inputs
group-onsemi 0:098463de4c5d 131 MXC_AFE->ctrl3 |= (MXC_F_AFE_CTRL3_EN_PCH_OPAMP3 |
group-onsemi 0:098463de4c5d 132 MXC_F_AFE_CTRL3_EN_NCH_OPAMP3);
group-onsemi 0:098463de4c5d 133 break;
group-onsemi 0:098463de4c5d 134 }
group-onsemi 0:098463de4c5d 135
group-onsemi 0:098463de4c5d 136 // Enable AFE power
group-onsemi 0:098463de4c5d 137 MXC_PWRMAN->pwr_rst_ctrl |= MXC_F_PWRMAN_PWR_RST_CTRL_AFE_POWERED;
group-onsemi 0:098463de4c5d 138
group-onsemi 0:098463de4c5d 139 // Setup internal voltage references
group-onsemi 0:098463de4c5d 140 MXC_SET_FIELD(&MXC_AFE->ctrl1, (MXC_F_AFE_CTRL1_REF_DAC_VOLT_SEL | MXC_F_AFE_CTRL1_REF_ADC_VOLT_SEL),
group-onsemi 0:098463de4c5d 141 (MXC_F_AFE_CTRL1_REF_ADC_POWERUP | MXC_F_AFE_CTRL1_REF_BLK_POWERUP |
group-onsemi 0:098463de4c5d 142 (MXC_E_AFE_REF_VOLT_SEL_1500 << MXC_F_AFE_CTRL1_REF_ADC_VOLT_SEL_POS)));
group-onsemi 0:098463de4c5d 143
group-onsemi 0:098463de4c5d 144 // Disable interpolation
group-onsemi 0:098463de4c5d 145 obj->dac->ctrl0 &= ~MXC_F_DAC_CTRL0_INTERP_MODE;
group-onsemi 0:098463de4c5d 146 }
group-onsemi 0:098463de4c5d 147
group-onsemi 0:098463de4c5d 148 //******************************************************************************
group-onsemi 0:098463de4c5d 149 void analogout_write(dac_t *obj, float value)
group-onsemi 0:098463de4c5d 150 {
group-onsemi 0:098463de4c5d 151 analogout_write_u16(obj, (uint16_t)((value/1.0) * 0xFFFF));
group-onsemi 0:098463de4c5d 152 }
group-onsemi 0:098463de4c5d 153
group-onsemi 0:098463de4c5d 154 //******************************************************************************
group-onsemi 0:098463de4c5d 155 void analogout_write_u16(dac_t *obj, uint16_t value)
group-onsemi 0:098463de4c5d 156 {
group-onsemi 0:098463de4c5d 157 // Enable the OPAMP
group-onsemi 0:098463de4c5d 158 // Setup the OPAMP in follower mode
group-onsemi 0:098463de4c5d 159 switch(obj->index) {
group-onsemi 0:098463de4c5d 160 case 0:
group-onsemi 0:098463de4c5d 161 MXC_AFE->ctrl3 |= MXC_F_AFE_CTRL3_POWERUP_OPAMP0;
group-onsemi 0:098463de4c5d 162 break;
group-onsemi 0:098463de4c5d 163 case 1:
group-onsemi 0:098463de4c5d 164 MXC_AFE->ctrl3 |= MXC_F_AFE_CTRL3_POWERUP_OPAMP1;
group-onsemi 0:098463de4c5d 165 break;
group-onsemi 0:098463de4c5d 166 case 2:
group-onsemi 0:098463de4c5d 167 MXC_AFE->ctrl3 |= MXC_F_AFE_CTRL3_POWERUP_OPAMP2;
group-onsemi 0:098463de4c5d 168 break;
group-onsemi 0:098463de4c5d 169 case 3:
group-onsemi 0:098463de4c5d 170 MXC_AFE->ctrl3 |= MXC_F_AFE_CTRL3_POWERUP_OPAMP3;
group-onsemi 0:098463de4c5d 171 break;
group-onsemi 0:098463de4c5d 172 }
group-onsemi 0:098463de4c5d 173
group-onsemi 0:098463de4c5d 174 // Output 1 sample with minimal delay
group-onsemi 0:098463de4c5d 175 obj->dac->rate |= 0x1;
group-onsemi 0:098463de4c5d 176
group-onsemi 0:098463de4c5d 177 // Set the start mode to output once data is in the FIFO
group-onsemi 0:098463de4c5d 178 obj->dac->ctrl0 &= ~(MXC_F_DAC_CTRL0_START_MODE | MXC_F_DAC_CTRL0_OP_MODE);
group-onsemi 0:098463de4c5d 179
group-onsemi 0:098463de4c5d 180 // Enable the DAC
group-onsemi 0:098463de4c5d 181 obj->dac->ctrl0 |= (MXC_F_DAC_CTRL0_POWER_MODE_2 |
group-onsemi 0:098463de4c5d 182 MXC_F_DAC_CTRL0_POWER_MODE_1_0 | MXC_F_DAC_CTRL0_POWER_ON |
group-onsemi 0:098463de4c5d 183 MXC_F_DAC_CTRL0_CLOCK_GATE_EN | MXC_F_DAC_CTRL0_CPU_START);
group-onsemi 0:098463de4c5d 184
group-onsemi 0:098463de4c5d 185 if(obj->index < 2) {
group-onsemi 0:098463de4c5d 186 obj->out = (value);
group-onsemi 0:098463de4c5d 187 obj->dac_fifo->output_16 = (obj->out);
group-onsemi 0:098463de4c5d 188
group-onsemi 0:098463de4c5d 189 } else {
group-onsemi 0:098463de4c5d 190 // Convert 16 bits to 8 bits
group-onsemi 0:098463de4c5d 191 obj->out = (value >> 8);
group-onsemi 0:098463de4c5d 192 obj->dac_fifo->output_8 = (obj->out);
group-onsemi 0:098463de4c5d 193 }
group-onsemi 0:098463de4c5d 194 }
group-onsemi 0:098463de4c5d 195
group-onsemi 0:098463de4c5d 196 //******************************************************************************
group-onsemi 0:098463de4c5d 197 float analogout_read(dac_t *obj)
group-onsemi 0:098463de4c5d 198 {
group-onsemi 0:098463de4c5d 199 return (((float)analogout_read_u16(obj) / (float)0xFFFF) * 1.5);
group-onsemi 0:098463de4c5d 200 }
group-onsemi 0:098463de4c5d 201
group-onsemi 0:098463de4c5d 202 //******************************************************************************
group-onsemi 0:098463de4c5d 203 uint16_t analogout_read_u16(dac_t *obj)
group-onsemi 0:098463de4c5d 204 {
group-onsemi 0:098463de4c5d 205 if(obj->index < 2) {
group-onsemi 0:098463de4c5d 206 // Convert 12 bits to 16 bits
group-onsemi 0:098463de4c5d 207 return (obj->out << 4);
group-onsemi 0:098463de4c5d 208 } else {
group-onsemi 0:098463de4c5d 209 // Convert 8 bits to 16 bits
group-onsemi 0:098463de4c5d 210 return (obj->out << 8);
group-onsemi 0:098463de4c5d 211 }
group-onsemi 0:098463de4c5d 212 }