Diff: MAX20303.cpp

Revision:

0:ff4818eff240

Child:

1:d85b06dc60a3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MAX20303.cpp	Fri Jan 19 15:47:44 2018 -0800
@@ -0,0 +1,160 @@
+/*******************************************************************************
+ * Copyright (C) 2018 Maxim Integrated Products, Inc., All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
+ * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of Maxim Integrated
+ * Products, Inc. shall not be used except as stated in the Maxim Integrated
+ * Products, Inc. Branding Policy.
+ *
+ * The mere transfer of this software does not imply any licenses
+ * of trade secrets, proprietary technology, copyrights, patents,
+ * trademarks, maskwork rights, or any other form of intellectual
+ * property whatsoever. Maxim Integrated Products, Inc. retains all
+ * ownership rights.
+ *******************************************************************************
+ */
+
+
+#include "MAX20303.h"
+#include "Peripherals.h"
+
+
+//******************************************************************************
+MAX20303::MAX20303(I2C *i2c):
+	m_i2c(i2c), m_writeAddress(MAX20303_SLAVE_WR_ADDR),
+	m_readAddress(MAX20303_SLAVE_RD_ADDR)
+{
+}
+
+
+//******************************************************************************
+MAX20303::~MAX20303(void)
+{
+  //empty block
+}
+
+
+//******************************************************************************
+int MAX20303::LDO1Config()
+{
+	int32_t ret = 0;
+	uint8_t val;
+	ret |= writeReg(MAX20303::REG_AP_CMDOUT, 0x40);
+	ret |= writeReg(MAX20303::REG_AP_DATOUT0, 0x05);
+	ret |= writeReg(MAX20303::REG_AP_DATOUT1, 0x34);
+
+	readReg(MAX20303::REG_AP_CMDOUT, val);
+	readReg(MAX20303::REG_AP_DATOUT0, val);
+	readReg(MAX20303::REG_AP_DATOUT1, val);
+
+	return ret;
+}
+
+//******************************************************************************
+int MAX20303::writeReg(registers_t reg, uint8_t value)
+{
+	int32_t ret;
+
+	char cmdData[2] = {reg, value};
+
+	ret = m_i2c->write(m_writeAddress, cmdData, sizeof(cmdData));
+	//printf("MAX20303 write reg[0x%X]=0x%X, ret=%d\r\n", (uint32_t)reg, value, ret)
+
+	if (ret != 0)
+		return MAX20303_ERROR;
+
+	return MAX20303_NO_ERROR;
+}
+
+
+//******************************************************************************
+int MAX20303::readReg(registers_t reg, uint8_t &value)
+{
+	int32_t ret;
+
+	char data = reg;
+
+	ret = m_i2c->write(m_writeAddress, &data, sizeof(data));
+	if (ret != 0) {
+		printf("%s - failed - ret: %d\n", __func__);
+		return MAX20303_ERROR;
+	}
+
+	ret = m_i2c->read(m_readAddress, &data, sizeof(data));
+	if (ret != 0) {
+		printf("%s - failed - ret: %d\n", __func__);
+		return MAX20303_ERROR;
+	}
+
+	value = data;
+	printf("MAX20303 read reg[0x%X]=0x%X, ret=%d\r\n", (uint32_t)reg, value, ret);
+	return MAX20303_NO_ERROR;
+}
+
+
+//******************************************************************************
+int MAX20303::mv2bits(int mV)
+{
+    int regBits;
+
+    if (( MAX20303_LDO_MIN_MV <= mV) && (mV <= MAX20303_LDO_MAX_MV)) {
+        regBits = (mV -  MAX20303_LDO_MIN_MV) /  MAX20303_LDO_STEP_MV;
+    } else {
+        return -1;
+    }
+
+    return regBits;
+}
+
+int MAX20303::led0on(void) {
+
+	writeReg(REG_LED0_DIRECT, 0x21);
+
+	return MAX20303_NO_ERROR;
+}
+
+int MAX20303::BoostEnable(void) {
+
+	writeReg(REG_AP_CMDOUT, 0x30);
+	writeReg(REG_AP_DATOUT3, 0x00);	// 00 : 5V
+	writeReg(REG_AP_DATOUT0, 0x01);	// Boost Enabled
+
+	return MAX20303_NO_ERROR;
+}
+
+int MAX20303::BuckBoostEnable(void)
+{
+	int ret = 0;
+
+	ret |= writeReg( REG_AP_DATOUT0,  0x00);    // Reserved = 0x00
+	ret |= writeReg( REG_AP_DATOUT1,  0x04);    // BBstlSet = 0b'100   Buck Boost Peak current Limit = 200mA
+	ret |= writeReg( REG_AP_DATOUT2,  0x19);    // BBstVSet = 0b'11001  Buck Boost Output Voltage = 5V
+	ret |= writeReg( REG_AP_DATOUT3,  0x01);    // BBstRipRed = 1 Ripple Reduction
+	// BBstAct    = 1 Actively discharged in Hard-Reset or Enable Low
+	// BBstPas    = 1 Passively discharged in Hard-Reset or Enable Low
+	// BBstMd     = 1 Damping Enabled
+	// BBstInd    = 0  Inductance is 4.7uH
+	// BBstEn     = 0b'01 Enabled
+	ret |= writeReg( REG_AP_CMDOUT, 0x70);
+	if (ret != 0)
+		return MAX20303_ERROR;
+
+	return MAX20303_NO_ERROR;
+}