Pratyush Mallick
this is testing
Diff: noos_mbed/drivers/adc-dac/ad5592r/ad5592r.c
- Revision:
- 0:e8a1ba50c46b
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/noos_mbed/drivers/adc-dac/ad5592r/ad5592r.c Thu Jan 14 19:12:57 2021 +0530
@@ -0,0 +1,295 @@
+/***************************************************************************//**
+ * @file ad5592r.c
+ * @brief Implementation of AD5592R 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 "error.h"
+#include "ad5592r-base.h"
+#include "ad5592r.h"
+
+const struct ad5592r_rw_ops ad5592r_rw_ops = {
+ .write_dac = ad5592r_write_dac,
+ .read_adc = ad5592r_read_adc,
+ .multi_read_adc = ad5592r_multi_read_adc,
+ .reg_write = ad5592r_reg_write,
+ .reg_read = ad5592r_reg_read,
+ .gpio_read = ad5592r_gpio_read,
+};
+
+/**
+ * Write NOP and read value.
+ *
+ * @param dev - The device structure.
+ * @param buf - buffer where to read
+ * @return 0 in case of success, negative error code otherwise
+ */
+static int32_t ad5592r_spi_wnop_r16(struct ad5592r_dev *dev, uint16_t *buf)
+{
+ int32_t ret;
+ uint16_t spi_msg_nop = 0; /* NOP */
+
+ ret = spi_write_and_read(dev->spi, (uint8_t *)&spi_msg_nop,
+ sizeof(spi_msg_nop));
+ if (ret < 0)
+ return ret;
+
+ *buf = swab16(spi_msg_nop);
+
+ return ret;
+}
+
+/**
+ * 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 ad5592r_write_dac(struct ad5592r_dev *dev, uint8_t chan,
+ uint16_t value)
+{
+ if (!dev)
+ return FAILURE;
+
+ dev->spi_msg = swab16( BIT(15) | (uint16_t)(chan << 12) | value);
+
+ return spi_write_and_read(dev->spi, (uint8_t *)&dev->spi_msg,
+ sizeof(dev->spi_msg));
+}
+
+/**
+ * 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 ad5592r_read_adc(struct ad5592r_dev *dev, uint8_t chan,
+ uint16_t *value)
+{
+ int32_t ret;
+
+ if (!dev)
+ return FAILURE;
+
+ dev->spi_msg = swab16((uint16_t)(AD5592R_REG_ADC_SEQ << 11) |
+ BIT(chan));
+
+ ret = spi_write_and_read(dev->spi, (uint8_t *)&dev->spi_msg,
+ sizeof(dev->spi_msg));
+ if (ret < 0)
+ return ret;
+
+ /*
+ * Invalid data:
+ * See Figure 40. Single-Channel ADC Conversion Sequence
+ */
+ ret = ad5592r_spi_wnop_r16(dev, &dev->spi_msg);
+ if (ret < 0)
+ return ret;
+
+ ret = ad5592r_spi_wnop_r16(dev, &dev->spi_msg);
+ if (ret < 0)
+ return ret;
+
+ *value = dev->spi_msg;
+
+ 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 ad5592r_multi_read_adc(struct ad5592r_dev *dev, uint16_t chans,
+ uint16_t *values)
+{
+ int32_t ret;
+ uint8_t samples;
+ uint8_t i;
+
+ if (!dev)
+ return FAILURE;
+
+ samples = hweight8(chans);
+
+ dev->spi_msg = swab16((uint16_t)(AD5592R_REG_ADC_SEQ << 11) | chans);
+
+ ret = spi_write_and_read(dev->spi, (uint8_t *)&dev->spi_msg,
+ sizeof(dev->spi_msg));
+ if (ret < 0)
+ return ret;
+
+ /*
+ * Invalid data:
+ * See Figure 40. Single-Channel ADC Conversion Sequence
+ */
+ ret = ad5592r_spi_wnop_r16(dev, &dev->spi_msg);
+ if (ret < 0)
+ return ret;
+
+ for (i = 0; i < samples; i++) {
+ ret = ad5592r_spi_wnop_r16(dev, &dev->spi_msg);
+ if (ret < 0)
+ return ret;
+ values[i] = dev->spi_msg;
+ }
+
+ 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 ad5592r_reg_write(struct ad5592r_dev *dev, uint8_t reg, uint16_t value)
+{
+ if (!dev)
+ return FAILURE;
+
+ dev->spi_msg = swab16((reg << 11) | value);
+
+ return spi_write_and_read(dev->spi, (uint8_t *)&dev->spi_msg,
+ sizeof(dev->spi_msg));
+}
+
+/**
+ * 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 ad5592r_reg_read(struct ad5592r_dev *dev, uint8_t reg, uint16_t *value)
+{
+ int32_t ret;
+
+ if (!dev)
+ return FAILURE;
+
+ dev->spi_msg = swab16((AD5592R_REG_LDAC << 11) |
+ AD5592R_LDAC_READBACK_EN | (reg << 2) | dev->ldac_mode);
+
+ ret = spi_write_and_read(dev->spi, (uint8_t *)&dev->spi_msg,
+ sizeof(dev->spi_msg));
+ if (ret < 0)
+ return ret;
+
+ ret = ad5592r_spi_wnop_r16(dev, &dev->spi_msg);
+ if (ret < 0)
+ return ret;
+
+ *value = dev->spi_msg;
+
+ 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 ad5592r_gpio_read(struct ad5592r_dev *dev, uint8_t *value)
+{
+ int32_t ret;
+
+ if (!dev)
+ return FAILURE;
+
+ ret = ad5592r_reg_write(dev, AD5592R_REG_GPIO_IN_EN,
+ AD5592R_GPIO_READBACK_EN | dev->gpio_in);
+ if (ret < 0)
+ return ret;
+
+ ret = ad5592r_spi_wnop_r16(dev, &dev->spi_msg);
+ if (ret < 0)
+ return ret;
+
+ *value = (uint8_t)dev->spi_msg;
+
+ 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 ad5592r_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 = &ad5592r_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 = ad5592r_reg_read(dev, AD5592R_REG_PD, &temp_reg_val);
+ if (ret < 0)
+ return ret;
+ temp_reg_val |= AD5592R_REG_PD_EN_REF;
+
+ return ad5592r_reg_write(dev, AD5592R_REG_PD, temp_reg_val);
+ }
+
+ return ret;
+}