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233 lines
6.9 KiB
C
233 lines
6.9 KiB
C
/*******************************************************************************
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* Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
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* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the name of Maxim Integrated
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* Products, Inc. shall not be used except as stated in the Maxim Integrated
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* Products, Inc. Branding Policy.
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*
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* The mere transfer of this software does not imply any licenses
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* of trade secrets, proprietary technology, copyrights, patents,
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* trademarks, maskwork rights, or any other form of intellectual
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* property whatsoever. Maxim Integrated Products, Inc. retains all
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* ownership rights.
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*
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* $Date: 2016-03-11 10:46:37 -0700 (Fri, 11 Mar 2016) $
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* $Revision: 21839 $
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*
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******************************************************************************/
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/***** Includes *****/
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#include <stddef.h>
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#include "mxc_config.h"
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#include "mxc_sys.h"
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#include "max14690n.h"
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#include "board.h"
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#include "i2cm.h"
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#include "lp.h"
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/***** Definitions *****/
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#define MAX14690_I2C_ADDR (0x50 >> 1)
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#define MAX14690_ADDR_ID 0x00
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#define MAX14690_ADDR_LDO2 0x14
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#define MAX14690_LDO_EN 0x02
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/***** Function Prototypes *****/
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static void VBUS_Interrupt(void *unused);
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/******************************************************************************/
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int MAX14690N_Init(float ldo2v, ldo_enable_mode_t ldo2en, float ldo3v, ldo_enable_mode_t ldo3en)
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{
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uint8_t addr;
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uint8_t data[2];
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/* Setup the I2CM Peripheral to talk to the MAX14690 */
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sys_cfg_i2cm_t cfg;
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cfg.clk_scale = CLKMAN_SCALE_DIV_1;
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cfg.io_cfg = max14690_io_cfg;
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I2CM_Init(MAX14690_I2CM, &cfg, I2CM_SPEED_100KHZ);
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/* Attempt to read the ID from the device */
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addr = MAX14690_ADDR_ID;
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if (I2CM_Read(MAX14690_I2CM, MAX14690_I2C_ADDR, &addr, 1, data, 2) != 2) {
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return E_COMM_ERR;
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}
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/* Configure the initial state of LDO2 */
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if ((0.8 <= ldo2v)&&(ldo2v <= 3.6)){
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data[0] = MAX14690_REG_LDO2_VSET;
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data[1] = (10 * ldo2v) - 8;
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if (I2CM_Write(MAX14690_I2CM, MAX14690_I2C_ADDR, NULL, 0, data, 2) != 2) {
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return -1;
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}
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}
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data[0] = MAX14690_REG_LDO2_CFG;
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data[1] = ldo2en;
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if (I2CM_Write(MAX14690_I2CM, MAX14690_I2C_ADDR, NULL, 0, data, 2) != 2) {
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return -1;
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}
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/* Configure the initial state of LDO3 */
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if ((0.8 <= ldo3v)&&(ldo3v <= 3.6)){
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data[0] = MAX14690_REG_LDO3_VSET;
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data[1] = (10 * ldo3v) - 8;
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if (I2CM_Write(MAX14690_I2CM, MAX14690_I2C_ADDR, NULL, 0, data, 2) != 2) {
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return -1;
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}
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} else {
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return -1;
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}
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data[0] = MAX14690_REG_LDO3_CFG;
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data[1] = ldo3en;
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if (I2CM_Write(MAX14690_I2CM, MAX14690_I2C_ADDR, NULL, 0, data, 2) != 2) {
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return -1;
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}
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VBUS_Interrupt(NULL);
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/* Configure GPIO for interrupt pin from PMIC */
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if (GPIO_Config(&max14690_int) != E_NO_ERROR) {
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return E_UNKNOWN;
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}
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/* Configure and enable interrupt */
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GPIO_RegisterCallback(&max14690_int, VBUS_Interrupt, NULL);
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GPIO_IntConfig(&max14690_int, GPIO_INT_FALLING_EDGE);
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GPIO_IntEnable(&max14690_int);
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NVIC_EnableIRQ(MXC_GPIO_GET_IRQ(max14690_int.port));
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/* Configure interrupt wakeup */
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if (LP_ConfigGPIOWakeUpDetect(&max14690_int, 0, LP_WEAK_PULL_UP) != E_NO_ERROR) {
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return E_UNKNOWN;
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}
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/* Enable the VBUS interrupt */
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data[0] = 0x07; /* IntMaskA */
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data[1] = 0x08; /* UsbOk */
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if (I2CM_Write(MAX14690_I2CM, MAX14690_I2C_ADDR, NULL, 0, data, 2) != 2) {
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return -1;
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}
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return E_NO_ERROR;
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}
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/******************************************************************************/
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static void VBUS_Interrupt(void *unused)
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{
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uint8_t addr = 0x02; /* StatusA */
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uint8_t data[5];
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if (I2CM_Read(MAX14690_I2CM, MAX14690_I2C_ADDR, &addr, 1, data, sizeof(data)) == sizeof(data)) {
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if (data[1] & 0x08) { /* UsbOk */
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/* VBUS is present. Enable LDO2 */
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// MAX14690_EnableLDO2(1);
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} else {
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/* VBUS is not present. Disable LDO2 */
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// MAX14690_EnableLDO2(0);
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}
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}
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}
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/******************************************************************************/
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int MAX14690_LDO2setMode(ldo_enable_mode_t mode)
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{
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int retval;
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uint8_t data[2] = {MAX14690_REG_LDO2_CFG, mode};
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retval = I2CM_Write(MAX14690_I2CM, MAX14690_I2C_ADDR, NULL, 0, data, 2);
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if(retval != 2) {
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return retval;
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}
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return E_NO_ERROR;
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}
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/******************************************************************************/
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int MAX14690_LDO2setV(float voltage)
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{
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int retval;
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uint8_t data[2] = {MAX14690_REG_LDO2_VSET, 0};
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if ((0.8 <= voltage)&&(voltage <= 3.6)){
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data[1] = (10 * voltage) - 8;
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} else {
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return -1;
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}
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retval = I2CM_Write(MAX14690_I2CM, MAX14690_I2C_ADDR, NULL, 0, data, 2);
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if(retval != 2) {
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return retval;
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}
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return E_NO_ERROR;
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}
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/******************************************************************************/
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int MAX14690_LDO3setMode(ldo_enable_mode_t mode)
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{
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int retval;
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uint8_t data[2] = {MAX14690_REG_LDO3_CFG, mode};
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retval = I2CM_Write(MAX14690_I2CM, MAX14690_I2C_ADDR, NULL, 0, data, 2);
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if(retval != 2) {
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return retval;
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}
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return E_NO_ERROR;
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}
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/******************************************************************************/
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int MAX14690_LDO3setV(float voltage)
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{
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int retval;
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uint8_t data[2] = {MAX14690_REG_LDO3_VSET, 0};
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if ((0.8 <= voltage)&&(voltage <= 3.6)){
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data[1] = (10 * voltage) - 8;
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} else {
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return -1;
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}
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retval = I2CM_Write(MAX14690_I2CM, MAX14690_I2C_ADDR, NULL, 0, data, 2);
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if(retval != 2) {
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return retval;
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}
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return E_NO_ERROR;
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}
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/******************************************************************************/
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int MAX14690_MuxSet(max14690_mux_ch_t ch, max14690_mux_div_t div)
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{
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int retval;
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uint8_t data[2] = {MAX14690_REG_MON_CFG, 0};
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data[1] = (div << 4) + ch;
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retval = I2CM_Write(MAX14690_I2CM, MAX14690_I2C_ADDR, NULL, 0, data, 2);
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if(retval != 2) {
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return retval;
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}
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return E_NO_ERROR;
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}
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