DPS310 I2C Pressure Sensor Interface

Node/Common/sensors/inc/DpsRegister.h

@@ -0,0 +1,19 @@
+#ifndef DPSREGISTER_H_INCLUDED
+#define DPSREGISTER_H_INCLUDED
+
+#include <Arduino.h>
+
+typedef struct
+{
+    uint8_t regAddress;
+    uint8_t mask;
+    uint8_t shift;
+} RegMask_t;
+
+typedef struct
+{
+    uint8_t regAddress;
+    uint8_t length;
+} RegBlock_t;
+
+#endif

Node/Common/sensors/inc/dps310_config.h

@@ -0,0 +1,49 @@
+#ifndef DPS310_CONFIG_H_
+#define DPS310_CONFIG_H_
+
+#define DPS310_NUM_OF_REGMASKS 16
+
+enum Interrupt_source_310_e
+{
+    DPS310_NO_INTR = 0,
+    DPS310_PRS_INTR = 1,
+    DPS310_TEMP_INTR = 2,
+    DPS310_BOTH_INTR = 3,
+    DPS310_FIFO_FULL_INTR = 4,
+};
+
+namespace dps310
+{
+
+enum Registers_e
+{
+    PROD_ID = 0,
+    REV_ID,
+    TEMP_SENSOR,    // internal vs external
+    TEMP_SENSORREC, //temperature sensor recommendation
+    TEMP_SE,        //temperature shift enable (if temp_osr>3)
+    PRS_SE,         //pressure shift enable (if prs_osr>3)
+    FIFO_FL,        //FIFO flush
+    FIFO_EMPTY,     //FIFO empty
+    FIFO_FULL,      //FIFO full
+    INT_HL,
+    INT_SEL,         //interrupt select
+};
+
+const RegMask_t registers[DPS310_NUM_OF_REGMASKS] = {
+    {0x0D, 0x0F, 0}, // PROD_ID
+    {0x0D, 0xF0, 4}, // REV_ID
+    {0x07, 0x80, 7}, // TEMP_SENSOR
+    {0x28, 0x80, 7}, // TEMP_SENSORREC
+    {0x09, 0x08, 3}, // TEMP_SE
+    {0x09, 0x04, 2}, // PRS_SE
+    {0x0C, 0x80, 7}, // FIFO_FL
+    {0x0B, 0x01, 0}, // FIFO_EMPTY
+    {0x0B, 0x02, 1}, // FIFO_FULL
+    {0x09, 0x80, 7}, // INT_HL
+    {0x09, 0x70, 4}, // INT_SEL
+};
+
+const RegBlock_t coeffBlock = {0x10, 18};
+} // namespace dps310
+#endif

Node/Common/sensors/inc/dps_config.h

@@ -0,0 +1,130 @@
+
+#ifndef DPS_CONSTS_H_
+#define DPS_CONSTS_H_
+#include "DpsRegister.h"
+
+///////////     DPS310    ///////////
+#define DPS310__PROD_ID 0x00
+#define DPS310__SPI_WRITE_CMD 0x00U
+#define DPS310__SPI_READ_CMD 0x80U
+#define DPS310__SPI_RW_MASK 0x80U
+#define DPS310__SPI_MAX_FREQ 1000000U
+
+#define DPS310__OSR_SE 3U
+
+// DPS310 has 10 milliseconds of spare time for each synchronous measurement / per second for asynchronous measurements
+// this is for error prevention on friday-afternoon-products :D
+// you can set it to 0 if you dare, but there is no warranty that it will still work
+#define DPS310__BUSYTIME_FAILSAFE 10U
+#define DPS310__MAX_BUSYTIME ((1000U - DPS310__BUSYTIME_FAILSAFE) * DPS__BUSYTIME_SCALING)
+
+#define DPS310__REG_ADR_SPI3W 0x09U
+#define DPS310__REG_CONTENT_SPI3W 0x01U
+
+///////////     DPS422    ///////////
+#define DPS422__PROD_ID 0x0A
+
+///////////     common    ///////////
+
+// slave address same for 422 and 310 (to be proved for future sensors)
+#define DPS__FIFO_SIZE 32
+#define DPS__STD_SLAVE_ADDRESS 0x77U
+#define DPS__RESULT_BLOCK_LENGTH 3
+#define NUM_OF_COMMON_REGMASKS 16
+
+#define DPS__MEASUREMENT_RATE_1 0
+#define DPS__MEASUREMENT_RATE_2 1
+#define DPS__MEASUREMENT_RATE_4 2
+#define DPS__MEASUREMENT_RATE_8 3
+#define DPS__MEASUREMENT_RATE_16 4
+#define DPS__MEASUREMENT_RATE_32 5
+#define DPS__MEASUREMENT_RATE_64 6
+#define DPS__MEASUREMENT_RATE_128 7
+
+#define DPS__OVERSAMPLING_RATE_1 DPS__MEASUREMENT_RATE_1
+#define DPS__OVERSAMPLING_RATE_2 DPS__MEASUREMENT_RATE_2
+#define DPS__OVERSAMPLING_RATE_4 DPS__MEASUREMENT_RATE_4
+#define DPS__OVERSAMPLING_RATE_8 DPS__MEASUREMENT_RATE_8
+#define DPS__OVERSAMPLING_RATE_16 DPS__MEASUREMENT_RATE_16
+#define DPS__OVERSAMPLING_RATE_32 DPS__MEASUREMENT_RATE_32
+#define DPS__OVERSAMPLING_RATE_64 DPS__MEASUREMENT_RATE_64
+#define DPS__OVERSAMPLING_RATE_128 DPS__MEASUREMENT_RATE_128
+
+//we use 0.1 ms units for time calculations, so 10 units are one millisecond
+#define DPS__BUSYTIME_SCALING 10U
+
+#define DPS__NUM_OF_SCAL_FACTS 8
+
+// status code
+#define DPS__SUCCEEDED 0
+#define DPS__FAIL_UNKNOWN -1
+#define DPS__FAIL_INIT_FAILED -2
+#define DPS__FAIL_TOOBUSY -3
+#define DPS__FAIL_UNFINISHED -4
+
+namespace dps
+{
+
+/**
+ * @brief Operating mode.
+ * 
+ */
+enum Mode
+{
+    IDLE = 0x00,
+    CMD_PRS = 0x01,
+    CMD_TEMP = 0x02,
+    CMD_BOTH = 0x03, // only for DPS422
+    CONT_PRS = 0x05,
+    CONT_TMP = 0x06,
+    CONT_BOTH = 0x07
+};
+
+enum RegisterBlocks_e
+{
+    PRS = 0, // pressure value
+    TEMP,    // temperature value
+};
+
+const RegBlock_t registerBlocks[2] = {
+    {0x00, 3},
+    {0x03, 3},
+};
+
+/**
+ * @brief registers for configuration and flags; these are the same for both 310 and 422, might need to be adapted for future sensors
+ * 
+ */
+enum Config_Registers_e
+{
+    TEMP_MR = 0, // temperature measure rate
+    TEMP_OSR,    // temperature measurement resolution
+    PRS_MR,      // pressure measure rate
+    PRS_OSR,     // pressure measurement resolution
+    MSR_CTRL,    // measurement control
+    FIFO_EN,
+
+    TEMP_RDY,
+    PRS_RDY,
+    INT_FLAG_FIFO,
+    INT_FLAG_TEMP,
+    INT_FLAG_PRS,
+};
+
+const RegMask_t config_registers[NUM_OF_COMMON_REGMASKS] = {
+    {0x07, 0x70, 4}, // TEMP_MR
+    {0x07, 0x07, 0}, // TEMP_OSR
+    {0x06, 0x70, 4}, // PRS_MR
+    {0x06, 0x07, 0}, // PRS_OSR
+    {0x08, 0x07, 0}, // MSR_CTRL
+    {0x09, 0x02, 1}, // FIFO_EN
+
+    {0x08, 0x20, 5}, // TEMP_RDY
+    {0x08, 0x10, 4}, // PRS_RDY
+    {0x0A, 0x04, 2}, // INT_FLAG_FIFO
+    {0x0A, 0x02, 1}, // INT_FLAG_TEMP
+    {0x0A, 0x01, 0}, // INT_FLAG_PRS
+};
+
+} // namespace dps
+#endif /* DPS_CONSTS_H_ */