Improve MMA7455 Accelerometer test(I2C)

If it receives gpio pin number for interrupt, the test will register isr
function to react to sensor interrupt.

Change-Id: I192db1ca642890672f5b216dbddb80cbb98f65d5
Signed-off-by: Hyeongsik Min <hyeongsik.min@samsung.com>

diff --git a/test/peripheral-io-test.c b/test/peripheral-io-test.c
index fa7e18e..1ec14eb 100644 (file)
--- a/test/peripheral-io-test.c
+++ b/test/peripheral-io-test.c
@@ -188,8 +188,9 @@ int i2c_gy30_test(void)
        peripheral_i2c_h i2c;
 
        printf("    %s()\n", __func__);
-       printf("Enter I2C bus number : ");
-       if (scanf("%d", &bus_num) < 0)
+       printf("Enter I2C bus number\n");
+
+       if (read_int_input(&bus_num) < 0)
                return -1;
 
        if ((ret = peripheral_i2c_open(bus_num, GY30_ADDR, &i2c)) < 0) {
@@ -197,8 +198,7 @@ int i2c_gy30_test(void)
                return -1;
        }
 
-       buf[0] = GY30_CONT_HIGH_RES_MODE;
-       if ((ret = peripheral_i2c_write(i2c, buf, 1)) < 0) {
+       if ((ret = peripheral_i2c_write_byte(i2c, GY30_CONT_HIGH_RES_MODE)) < 0) {
                printf("Failed to write, ret : %d\n", ret);
                goto error;
        }
@@ -221,73 +221,153 @@ error:
        return -1;
 }
 
-#define MMA_7455_ADDRESS 0x1D //I2C Address for the sensor
-#define MMA_7455_MODE_CONTROL 0x16 //Call the sensors Mode Control
+#define MMA7455_ADDRESS 0x1D //I2C Address for the sensor
+
+#define MMA7455_MCTL 0x16 // Mode Control
+
+#define MMA7455_MCTL_STANDBY_MODE 0x0
+#define MMA7455_MCTL_MEASUREMENT_MODE 0x01
+#define MMA7455_MCTL_LEVEL_DETECTION_MODE 0x02
+#define MMA7455_MCTL_PULSE_DETECTION_MODE 0x03
+#define MMA7455_MCTL_2G 0x04 //Set Sensitivity to 2g
+#define MMA7455_MCTL_4G 0x08 //Set Sensitivity to 4g
+#define MMA7455_MCTL_8G 0x00 //Set Sensitivity to 8g
+
+#define MMA7455_INTRST 0x17
+
+#define MMA7455_CONTROL1 0x18
+#define MMA7455_CONTROL1_INTREG 0x06
+#define MMA7455_CONTROL1_DFBW 0x80
+
+#define MMA7455_XOUT8 0x06 //Register for reading the X-Axis
+#define MMA7455_YOUT8 0x07 //Register for reading the Y-Axis
+#define MMA7455_ZOUT8 0x08 //Register for reading the Z-Axis
+
+static void i2c_mma7455_isr(void *user_data)
+{
+       peripheral_i2c_h i2c = user_data;
+       int x_pos, y_pos, z_pos;
+       uint8_t buf[4];
 
-#define MMA_7455_2G_MODE 0x04 //Set Sensitivity to 2g
-#define MMA_7455_4G_MODE 0x08 //Set Sensitivity to 4g
-#define MMA_7455_8G_MODE 0x00 //Set Sensitivity to 8g
+       peripheral_i2c_write_byte(i2c, MMA7455_XOUT8);
+       peripheral_i2c_read_byte(i2c, buf);
+       x_pos = (int)buf[0];
 
-#define MMA_7455_STANDBY_MODE 0x0
-#define MMA_7455_MEASUREMENT_MODE 0x1
-#define MMA_7455_LEVEL_DETECTION_MODE 0x2
-#define MMA_7455_PULSE_DETECTION_MODE 0x3
+       peripheral_i2c_write_byte(i2c, MMA7455_YOUT8);
+       peripheral_i2c_read_byte(i2c, buf);
+       y_pos = (int)buf[0];
 
-#define X_OUT 0x06 //Register for reading the X-Axis
-#define Y_OUT 0x07 //Register for reading the Y-Axis
-#define Z_OUT 0x08 //Register for reading the Z-Axis
+       peripheral_i2c_write_byte(i2c, MMA7455_ZOUT8);
+       peripheral_i2c_read_byte(i2c, buf);
+       z_pos = (int)buf[0];
+
+       printf("Result X : %d, Y : %d, Z : %d\n", x_pos, y_pos, z_pos);
+
+       /* Reset interrupt flags */
+       buf[0] = MMA7455_INTRST;
+       buf[1] = 0x3;
+       peripheral_i2c_write(i2c, buf, 2);
+       buf[1] = 0x0;
+       peripheral_i2c_write(i2c, buf, 2);
+
+       return;
+}
 
 int i2c_mma7455_test(void)
 {
+       static peripheral_i2c_h i2c;
+       static peripheral_gpio_h isr_gpio;
+       unsigned char buf[4];
+       int bus_num, gpio_num, ret;
        int cnt = 0;
-       int bus_num, ret;
-       unsigned char buf[10];
-       peripheral_i2c_h i2c;
 
        printf("    %s()\n", __func__);
-       printf("Enter I2C bus number");
-       if (scanf("%d", &bus_num) < 0)
+       if (i2c) {
+               printf("Disabling the test\n");
+
+               peripheral_i2c_close(i2c);
+               i2c = NULL;
+               printf("i2c(bus = %d address = %d) handle is closed\n", bus_num, MMA7455_ADDRESS);
+
+               if (isr_gpio) {
+                       peripheral_gpio_close(isr_gpio);
+                       isr_gpio = NULL;
+                       printf("isr_gpio handle is closed\n");
+               }
+
+               return 0;
+       }
+
+       printf("Enter I2C bus number\n");
+
+       if (read_int_input(&bus_num) < 0)
                return -1;
 
-       if ((ret = peripheral_i2c_open(bus_num, MMA_7455_ADDRESS, &i2c)) < 0) {
+       if ((ret = peripheral_i2c_open(bus_num, MMA7455_ADDRESS, &i2c)) < 0) {
                printf(">>>>> Failed to open I2C communication, ret : %d \n", ret);
                return -1;
        }
 
-       buf[0] = MMA_7455_MODE_CONTROL;
-       buf[1] = MMA_7455_2G_MODE | MMA_7455_LEVEL_DETECTION_MODE;
+       buf[0] = MMA7455_MCTL;
+       buf[1] = MMA7455_MCTL_8G | MMA7455_MCTL_PULSE_DETECTION_MODE;
        if ((ret = peripheral_i2c_write(i2c, buf, 2)) != 0) {
                printf(">>>>> Failed to write, ret : %d\n", ret);
                goto error;
        }
 
-       while (cnt++ < 10) {
-               int x_pos, y_pos, z_pos;
-               sleep(1);
+       printf("Enter GPIO pin number for Interrupt\n");
+       if (read_int_input(&gpio_num) < 0)
+               gpio_num = -1;
 
-               buf[0] = X_OUT;
-               peripheral_i2c_write(i2c, buf, 1);
-               peripheral_i2c_read(i2c, buf, 1);
-               x_pos = (int)buf[0];
-
-               buf[0] = Y_OUT;
-               peripheral_i2c_write(i2c, buf, 1);
-               peripheral_i2c_read(i2c, buf, 1);
-               y_pos = (int)buf[0];
+       if ((gpio_num > 0) && (peripheral_gpio_open(gpio_num, &isr_gpio) == 0)) {
+               ret = peripheral_gpio_set_direction(isr_gpio, PERIPHERAL_GPIO_DIRECTION_IN);
+               if (ret < 0)
+                       printf(">>>> Failed to set direction of isr_gpio\n");
 
-               buf[0] = Z_OUT;
-               peripheral_i2c_write(i2c, buf, 1);
-               peripheral_i2c_read(i2c, buf, 1);
-               z_pos = (int)buf[0];
+               ret = peripheral_gpio_set_edge_mode(isr_gpio, PERIPHERAL_GPIO_EDGE_RISING);
+               if (ret < 0)
+                       printf(">>>> Failed to set edge mode of isr_gpio\n");
 
-               printf("Result X : %d, Y : %d, Z : %d\n", x_pos, y_pos, z_pos);
+               ret = peripheral_gpio_register_cb(isr_gpio, i2c_mma7455_isr, (void*)i2c);
+               if (ret < 0)
+                       printf(">>>> Failed to register gpio callback\n");
+
+               buf[0] = MMA7455_INTRST;
+               buf[1] = 0x03;
+               peripheral_i2c_write(i2c, buf, 2);
+               buf[1] = 0x0;
+               peripheral_i2c_write(i2c, buf, 2);
+
+               printf("callback is registered on gpio pin %d\n", gpio_num);
+               printf("i2c(bus = %d address = %d) handle is open\n", bus_num, MMA7455_ADDRESS);
+       } else {
+               while (cnt++ < 10) {
+                       int x_pos, y_pos, z_pos;
+                       sleep(1);
+
+                       peripheral_i2c_write_byte(i2c, MMA7455_XOUT8);
+                       peripheral_i2c_read_byte(i2c, buf);
+                       x_pos = (int)buf[0];
+
+                       peripheral_i2c_write_byte(i2c, MMA7455_YOUT8);
+                       peripheral_i2c_read_byte(i2c, buf);
+                       y_pos = (int)buf[0];
+
+                       peripheral_i2c_write_byte(i2c, MMA7455_ZOUT8);
+                       peripheral_i2c_read_byte(i2c, buf);
+                       z_pos = (int)buf[0];
+
+                       printf("Result X : %d, Y : %d, Z : %d\n", x_pos, y_pos, z_pos);
+               }
+               peripheral_i2c_close(i2c);
+               i2c = NULL;
+               printf("i2c(bus = %d address = %d) handle is closed\n", bus_num, MMA7455_ADDRESS);
        }
-
-       peripheral_i2c_close(i2c);
        return 0;
 
 error:
        peripheral_i2c_close(i2c);
+       i2c = NULL;
        return -1;
 }