Pratyush Mallick
this is testing
Diff: noos_mbed/drivers/adc-dac/ad5592r/ad5593r.c
- Revision:
- 0:e8a1ba50c46b
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/noos_mbed/drivers/adc-dac/ad5592r/ad5593r.c Thu Jan 14 19:12:57 2021 +0530
@@ -0,0 +1,300 @@
+/***************************************************************************//**
+ * @file ad5593r.c
+ * @brief Implementation of AD5593R driver.
+ * @author Mircea Caprioru (mircea.caprioru@analog.com)
+********************************************************************************
+ * Copyright 2018, 2020(c) Analog Devices, Inc.
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * - Neither the name of Analog Devices, Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * - The use of this software may or may not infringe the patent rights
+ * of one or more patent holders. This license does not release you
+ * from the requirement that you obtain separate licenses from these
+ * patent holders to use this software.
+ * - Use of the software either in source or binary form, must be run
+ * on or directly connected to an Analog Devices Inc. component.
+ *
+ * THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT,
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, INTELLECTUAL PROPERTY RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*******************************************************************************/
+
+#include "ad5592r-base.h"
+#include "error.h"
+#include "ad5593r.h"
+
+#define AD5593R_MODE_CONF (0 << 4)
+#define AD5593R_MODE_DAC_WRITE (1 << 4)
+#define AD5593R_MODE_ADC_READBACK (4 << 4)
+#define AD5593R_MODE_DAC_READBACK (5 << 4)
+#define AD5593R_MODE_GPIO_READBACK (6 << 4)
+#define AD5593R_MODE_REG_READBACK (7 << 4)
+
+#define STOP_BIT 1
+#define RESTART_BIT 0
+#define AD5593R_ADC_VALUES_BUFF_SIZE 18
+
+const struct ad5592r_rw_ops ad5593r_rw_ops = {
+ .write_dac = ad5593r_write_dac,
+ .read_adc = ad5593r_read_adc,
+ .multi_read_adc= ad5593r_multi_read_adc,
+ .reg_write = ad5593r_reg_write,
+ .reg_read = ad5593r_reg_read,
+ .gpio_read = ad5593r_gpio_read,
+};
+
+/**
+ * Write DAC channel.
+ *
+ * @param dev - The device structure.
+ * @param chan - The channel number.
+ * @param value - DAC value
+ * @return 0 in case of success, negative error code otherwise
+ */
+int32_t ad5593r_write_dac(struct ad5592r_dev *dev, uint8_t chan,
+ uint16_t value)
+{
+ uint8_t data[3];
+
+ if (!dev)
+ return FAILURE;
+
+ data[0] = AD5593R_MODE_DAC_WRITE | chan;
+ data[1] = (value >> 8) & 0xF ;
+ data[2] = value & 0xFF;
+
+ return i2c_write(dev->i2c, data, sizeof(data), STOP_BIT);
+}
+
+/**
+ * Read ADC channel.
+ *
+ * @param dev - The device structure.
+ * @param chan - The channel number.
+ * @param value - ADC value
+ * @return 0 in case of success, negative error code otherwise
+ */
+int32_t ad5593r_read_adc(struct ad5592r_dev *dev, uint8_t chan,
+ uint16_t *value)
+{
+ int32_t ret;
+ uint8_t data[3];
+ uint16_t temp;
+
+ if (!dev)
+ return FAILURE;
+
+ temp = BIT(chan);
+
+ data[0] = AD5593R_MODE_CONF | AD5592R_REG_ADC_SEQ;
+ data[1] = temp >> 8;
+ data[2] = temp & 0xFF;
+
+ ret = i2c_write(dev->i2c, data, sizeof(data), STOP_BIT);
+ if (ret < 0)
+ return ret;
+
+ data[0] = AD5593R_MODE_ADC_READBACK;
+ ret = i2c_write(dev->i2c, data, 1, STOP_BIT);
+ if (ret < 0)
+ return ret;
+
+ ret = i2c_read(dev->i2c, data, 2, STOP_BIT);
+ if (ret < 0)
+ return ret;
+
+ *value = (uint16_t)((data[0] & 0x0F) << 8) + data[1];
+
+ return 0;
+}
+
+/**
+ * Read Multiple ADC Channels.
+ *
+ * @param dev - The device structure.
+ * @param chans - The ADC channels to be readback
+ * @param values - ADC value array
+ * @return 0 in case of success, negative error code otherwise
+ */
+int32_t ad5593r_multi_read_adc(struct ad5592r_dev *dev, uint16_t chans,
+ uint16_t *values)
+{
+ uint8_t data[AD5593R_ADC_VALUES_BUFF_SIZE], i;
+ int32_t ret;
+ uint8_t samples;
+
+ if (!dev)
+ return FAILURE;
+
+ samples = hweight8(chans);
+
+ data[0] = AD5593R_MODE_CONF | AD5592R_REG_ADC_SEQ;
+ data[1] = chans >> 8;
+ data[2] = chans & 0xFF;
+
+ ret = i2c_write(dev->i2c, data, 3, STOP_BIT);
+ if (ret < 0)
+ return ret;
+
+ data[0] = AD5593R_MODE_ADC_READBACK;
+ ret = i2c_write(dev->i2c, data, 1, RESTART_BIT);
+ if (ret < 0)
+ return ret;
+
+ ret = i2c_read(dev->i2c, data, (2 * samples), STOP_BIT);
+ if (ret < 0)
+ return ret;
+
+ for (i = 0; i < samples; i++) {
+ values[i] = ((uint16_t)(((data[2 * i] & 0xFF) << 8) + data[(2 * i) + 1]));
+ }
+
+ return 0;
+}
+
+/**
+ * Write register.
+ *
+ * @param dev - The device structure.
+ * @param reg - The register address.
+ * @param value - register value
+ * @return 0 in case of success, negative error code otherwise
+ */
+int32_t ad5593r_reg_write(struct ad5592r_dev *dev, uint8_t reg,
+ uint16_t value)
+{
+ int32_t ret;
+ uint8_t data[3];
+
+ if (!dev)
+ return FAILURE;
+
+ data[0] = AD5593R_MODE_CONF | reg;
+ data[1] = value >> 8;
+ data[2] = value;
+
+ ret = i2c_write(dev->i2c, data,sizeof(data), STOP_BIT);
+
+ if (reg == AD5592R_REG_RESET && ret < 0) {
+ return SUCCESS;
+ }
+
+ return ret;
+}
+
+/**
+ * Read register.
+ *
+ * @param dev - The device structure.
+ * @param reg - The register address.
+ * @param value - register value
+ * @return 0 in case of success, negative error code otherwise
+ */
+int32_t ad5593r_reg_read(struct ad5592r_dev *dev, uint8_t reg,
+ uint16_t *value)
+{
+ int32_t ret;
+ uint8_t data[2];
+
+ if (!dev)
+ return FAILURE;
+
+ data[0] = AD5593R_MODE_REG_READBACK | reg;
+
+ ret = i2c_write(dev->i2c, data, 1, STOP_BIT);
+ if (ret < 0)
+ return ret;
+
+ ret = i2c_read(dev->i2c, data, sizeof(data), STOP_BIT);
+ if (ret < 0)
+ return ret;
+
+ *value = (uint16_t) (data[0] << 8) + data[1];
+
+ return 0;
+}
+
+/**
+ * Read GPIOs.
+ *
+ * @param dev - The device structure.
+ * @param value - GPIOs value.
+ * @return 0 in case of success, negative error code otherwise
+ */
+int32_t ad5593r_gpio_read(struct ad5592r_dev *dev, uint8_t *value)
+{
+ int32_t ret;
+ uint8_t data[2];
+
+ if (!dev)
+ return FAILURE;
+
+ data[0] = AD5593R_MODE_GPIO_READBACK;
+ ret = i2c_write(dev->i2c, data, 1, STOP_BIT);
+ if (ret < 0)
+ return ret;
+
+ ret = i2c_read(dev->i2c, data, sizeof(data), STOP_BIT);
+ if (ret < 0)
+ return ret;
+
+ *value = data[1];
+
+ return 0;
+}
+
+/**
+ * Initialize AD5593r device.
+ *
+ * @param dev - The device structure.
+ * @param init_param - The initial parameters of the device.
+ * @return 0 in case of success, negative error code otherwise
+ */
+int32_t ad5593r_init(struct ad5592r_dev *dev,
+ struct ad5592r_init_param *init_param)
+{
+ int32_t ret;
+ uint16_t temp_reg_val;
+
+ if (!dev)
+ return FAILURE;
+
+ dev->ops = &ad5593r_rw_ops;
+
+ ret = ad5592r_software_reset(dev);
+ if (ret < 0)
+ return ret;
+
+ ret = ad5592r_set_channel_modes(dev);
+ if (ret < 0)
+ return ret;
+
+ if(init_param->int_ref) {
+ ret = ad5593r_reg_read(dev, AD5592R_REG_PD, &temp_reg_val);
+ if (ret < 0)
+ return ret;
+ temp_reg_val |= AD5592R_REG_PD_EN_REF;
+
+ return ad5593r_reg_write(dev, AD5592R_REG_PD, temp_reg_val);
+ }
+
+ return ret;
+}