Diff: Stmpe1600.h

Revision:

0:ba15439f45dd

diff -r 000000000000 -r ba15439f45dd Stmpe1600.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Stmpe1600.h	Fri Oct 16 15:11:45 2020 +0000
@@ -0,0 +1,340 @@
+/**
+ ******************************************************************************
+ * @file    Stmpe1600.h
+ * @author  AST / EST
+ * @version V0.0.1
+ * @date    14-April-2015
+ * @brief   Header file for component stmpe1600
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *   1. Redistributions of source code must retain the above copyright notice,
+ *      this list of conditions and the following disclaimer.
+ *   2. 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.
+ *   3. Neither the name of STMicroelectronics nor the names of its contributors
+ *      may be used to endorse or promote products derived from this software
+ *       without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, 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.
+ *
+ ******************************************************************************
+*/
+#ifndef     __STMPE1600_CLASS
+#define     __STMPE1600_CLASS
+/* Includes ------------------------------------------------------------------*/
+#include    "DevI2C.h"
+
+#define STMPE1600_DEF_DEVICE_ADDRESS  (uint8_t)0x42*2
+#define STMPE1600_DEF_DIGIOUT_LVL      1
+
+/**  STMPE1600 registr map **/
+#define CHIP_ID_0_7       (uint8_t)0x00
+#define CHIP_ID_8_15      (uint8_t)0x01
+#define VERSION_ID        (uint8_t)0x02
+#define SYS_CTRL          (uint8_t)0x03
+#define IEGPIOR_0_7       (uint8_t)0x08
+#define IEGPIOR_8_15	  (uint8_t)0x09
+#define ISGPIOR_0_7       (uint8_t)0x0A
+#define ISGPIOR_8_15	  (uint8_t)0x0B
+#define GPMR_0_7	      (uint8_t)0x10
+#define GPMR_8_15	      (uint8_t)0x11
+#define GPSR_0_7	      (uint8_t)0x12
+#define GPSR_8_15	      (uint8_t)0x13
+#define GPDR_0_7	      (uint8_t)0x14
+#define GPDR_8_15	      (uint8_t)0x15
+#define GPIR_0_7	      (uint8_t)0x16
+#define GPIR_8_15	      (uint8_t)0x17
+
+#define SOFT_RESET        (uint8_t)0x80
+
+typedef enum {
+    // GPIO Expander pin names
+    GPIO_0 = 0,
+    GPIO_1,
+    GPIO_2,
+    GPIO_3,
+    GPIO_4,
+    GPIO_5,
+    GPIO_6,
+    GPIO_7,
+    GPIO_8,
+    GPIO_9,
+    GPIO_10,
+    GPIO_11,
+    GPIO_12,
+    GPIO_13,
+    GPIO_14,
+    GPIO_15,
+    NOT_CON
+} ExpGpioPinName;
+
+typedef enum {
+    INPUT = 0,
+    OUTPUT,
+    NOT_CONNECTED
+} ExpGpioPinDirection;
+
+/* Classes -------------------------------------------------------------------*/
+/** Class representing a single stmpe1600 GPIO expander output pin
+ */
+class Stmpe1600DigiOut
+{
+
+public:
+    /** Constructor
+     * @param[in] &i2c device I2C to be used for communication
+     * @param[in] outpinname the desired out pin name to be created
+     * @param[in] DevAddr the stmpe1600 I2C device address (deft STMPE1600_DEF_DEVICE_ADDRESS)
+     * @param[in] lvl the default ot pin level
+     */
+    Stmpe1600DigiOut(DevI2C *i2c, ExpGpioPinName out_pin_name, uint8_t dev_addr = STMPE1600_DEF_DEVICE_ADDRESS,
+                     bool lvl = STMPE1600_DEF_DIGIOUT_LVL) : _dev_i2c(i2c), exp_dev_addr(dev_addr), exp_pin_name(out_pin_name)
+    {
+        uint8_t data[2];
+
+        if (exp_pin_name == NOT_CON) {
+            return;
+        }
+        /* set the exp_pin_name as output */
+        _dev_i2c->i2c_read(data, exp_dev_addr, GPDR_0_7, 1);
+        _dev_i2c->i2c_read(&data[1], exp_dev_addr, GPDR_8_15, 1);
+        * (uint16_t *) data = * (uint16_t *) data | (1 << (uint16_t) exp_pin_name);         // set gpio as out
+        _dev_i2c->i2c_write(data, exp_dev_addr, GPDR_0_7, 1);
+        _dev_i2c->i2c_write(&data[1], exp_dev_addr, GPDR_8_15, 1);
+        write(lvl);
+    }
+
+    /**
+     * @brief       Write on the out pin
+     * @param[in]   lvl level to write
+     * @return      0 on Success
+     */
+    void write(int lvl)
+    {
+        uint8_t data[2];
+
+        if (exp_pin_name == NOT_CON) {
+            return;
+        }
+        /* set the exp_pin_name state to lvl */
+        _dev_i2c->i2c_read(data, exp_dev_addr, GPSR_0_7, 2);
+        * (uint16_t *) data = * (uint16_t *) data & (uint16_t)(~(1 << (uint16_t) exp_pin_name));               // set pin mask
+        if (lvl) {
+            * (uint16_t *) data = * (uint16_t *) data | (uint16_t)(1 << (uint16_t) exp_pin_name);
+        }
+        _dev_i2c->i2c_write(data, exp_dev_addr, GPSR_0_7, 2);
+    }
+
+    /**
+     * @brief       Overload assignement operator
+     */
+    Stmpe1600DigiOut &operator= (int lvl)
+    {
+        write(lvl);
+        return *this;
+    }
+
+private:
+    DevI2C *_dev_i2c;
+    uint8_t exp_dev_addr;
+    ExpGpioPinName exp_pin_name;
+};
+
+/* Classes -------------------------------------------------------------------*/
+/** Class representing a single stmpe1600 GPIO expander input pin
+ */
+class Stmpe1600DigiIn
+{
+public:
+    /** Constructor
+    * @param[in] &i2c device I2C to be used for communication
+    * @param[in] inpinname the desired input pin name to be created
+    * @param[in] DevAddr the stmpe1600 I2C device addres (deft STMPE1600_DEF_DEVICE_ADDRESS)
+    */
+    Stmpe1600DigiIn(DevI2C *i2c, ExpGpioPinName in_pin_name,
+                    uint8_t dev_addr = STMPE1600_DEF_DEVICE_ADDRESS) : _dev_i2c(i2c), exp_dev_addr(dev_addr),
+        exp_pin_name(in_pin_name)
+    {
+        uint8_t data[2];
+
+        if (exp_pin_name == NOT_CON) {
+            return;
+        }
+        /* set the exp_pin_name as input pin direction */
+        _dev_i2c->i2c_read(data, exp_dev_addr, GPDR_0_7, 2);
+        * (uint16_t *) data = * (uint16_t *) data & (uint16_t)(~(1 << (uint16_t) exp_pin_name));               // set gpio as in
+        _dev_i2c->i2c_write(data, exp_dev_addr, GPDR_0_7, 2);
+    }
+
+    /**
+     * @brief       Read the input pin
+     * @return      The pin logical state 0 or 1
+     */
+    bool read()
+    {
+        uint8_t data[2];
+
+        if (exp_pin_name == NOT_CON) {
+            return false;
+        }
+        /* read the exp_pin_name */
+        _dev_i2c->i2c_read(data, exp_dev_addr, GPMR_0_7, 2);
+        * (uint16_t *) data = * (uint16_t *) data & (uint16_t)(1 << (uint16_t) exp_pin_name);            // mask the in gpio
+        if (data[0] || data[1]) {
+            return true;
+        }
+        return false;
+    }
+
+    operator int()
+    {
+        return read();
+    }
+
+private:
+    DevI2C *_dev_i2c;
+    uint8_t exp_dev_addr;
+    ExpGpioPinName exp_pin_name;
+};
+
+/* Classes -------------------------------------------------------------------*/
+/** Class representing a whole stmpe1600 component (16 gpio)
+ */
+class Stmpe1600
+{
+
+public:
+    /** Constructor
+    * @param[in] &i2c device I2C to be used for communication
+    * @param[in] DevAddr the stmpe1600 I2C device addres (deft STMPE1600_DEF_DEVICE_ADDRESS)
+    */
+    Stmpe1600(DevI2C *i2c, uint8_t dev_addr = STMPE1600_DEF_DEVICE_ADDRESS) : _dev_i2c(i2c)
+    {
+        exp_dev_addr = dev_addr;
+        write_sys_ctrl(SOFT_RESET);
+
+        gpdr0_15 = (uint16_t) 0;	// gpio dir all IN
+        write_16bit_reg(GPDR_0_7, &gpdr0_15);
+        gpsr0_15 = (uint16_t) 0x0ffff;   // gpio status all 1
+        write_16bit_reg(GPSR_0_7, &gpsr0_15);
+    }
+
+    /**
+     * @brief       Write the SYS_CTRL register
+     * @param[in]   Data to be written (bit fields)
+     */
+    void write_sys_ctrl(uint8_t data)      // data = SOFT_RESET reset the device
+    {
+        _dev_i2c->i2c_write(&data, exp_dev_addr, SYS_CTRL, 1);
+    }
+
+    /**
+     * @brief       Set the out pin
+     * @param[in]   The pin name
+     * @return      0 on Success
+     */
+    bool set_gpio(ExpGpioPinName pin_name)
+    {
+        if (pin_name == NOT_CON) {
+            return true;
+        }
+        gpsr0_15 = gpsr0_15 | ((uint16_t) 0x0001 << pin_name);
+        write_16bit_reg(GPSR_0_7, &gpsr0_15);
+        return false;
+    }
+
+    /**
+     * @brief       Clear the out pin
+     * @param[in]   The pin name
+     * @return      0 on Success
+     */
+    bool clear_gpio(ExpGpioPinName pin_name)
+    {
+        if (pin_name == NOT_CON) {
+            return true;
+        }
+        gpsr0_15 = gpsr0_15 & (~((uint16_t) 0x0001 << pin_name));
+        write_16bit_reg(GPSR_0_7, &gpsr0_15);
+        return false;
+    }
+
+    /**
+     * @brief       Read the input pin
+     * @param[in]   The pin name
+     * @return      The logical pin level
+     */
+    bool read_gpio(ExpGpioPinName pin_name)
+    {
+        uint16_t gpmr0_15;
+        if (pin_name == NOT_CON) {
+            return true;
+        }
+        read_16bit_reg(GPMR_0_7, &gpmr0_15);
+        gpmr0_15 = gpmr0_15 & ((uint16_t) 0x0001 << pin_name);
+        if (gpmr0_15) {
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * @brief       Set the pin direction
+     * @param[in]   The pin name
+     * @param[in]   The pin direction
+     * @return      0 on success
+     */
+    bool set_gpio_dir(ExpGpioPinName pin_name, ExpGpioPinDirection pin_dir)
+    {
+
+        if (pin_name == NOT_CON || pin_dir == NOT_CONNECTED) {
+            return true;
+        }
+        gpdr0_15 = gpdr0_15 & (~((uint16_t) 0x0001 << pin_name));        // clear the Pin
+        gpdr0_15 = gpdr0_15 | ((uint16_t) pin_dir << pin_name);
+        write_16bit_reg(GPDR_0_7, &gpdr0_15);
+        return false;
+    }
+
+    /**
+     * @brief       Read a 16 bits register
+     * @param[in]   The register address
+     * @param[in]   The pointer to the read data
+     */
+    void read_16bit_reg(uint8_t reg16_addr, uint16_t *reg16_data)
+    {
+        _dev_i2c->i2c_read((uint8_t *) reg16_data, exp_dev_addr, reg16_addr, 2);
+    }
+
+    /**
+     * @brief       Write a 16 bits register
+     * @param[in]   The register address
+     * @param[in]   The pointer to the data to be written
+     */
+    void write_16bit_reg(uint8_t reg16_addr, uint16_t *reg16_data)
+    {
+        _dev_i2c->i2c_write((uint8_t *) reg16_data, exp_dev_addr, reg16_addr, 2);
+    }
+
+private:
+    DevI2C *_dev_i2c;
+    uint16_t gpdr0_15;  // local copy of bit direction reg
+    uint16_t gpsr0_15;  // local copy of bit status reg
+    uint8_t exp_dev_addr; // expander device i2c addr
+};
+
+#endif // __STMPE1600_CLASS