devoalda
/
INF2004_Project
mirror of https://github.com/L4ncelot-R/freeRTOS-car.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Updated Magnetometer Calibration Struct

This commit is contained in:
Devoalda 2023-11-10 18:37:50 +08:00
parent c4908eb6f2
commit fa8e561490
3 changed files with 78 additions and 89 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
frtos/config/magnetometer_config.h
View File

@ -7,10 +7,11 @@
#define DIRECTION_READ_DELAY (200)
#define NUM_READINGS ( 10 ) // Number of readings to
// take before
// calculating
// direction
#define NUM_READINGS \
(10) // Number of readings to
// take before
// calculating
// direction
// #define ALPHA ( 0.1f ) // Low Pass Filter
// Coefficient
@ -56,6 +57,12 @@ typedef enum
RIGHT = 3
} angle_t;
typedef struct s_calibration_data
{
int16_t accelerometerBias[3];
int16_t magnetometerBias[3];
} calibration_data_t;
/**
* @brief The direction of the car
* roll = angle of the car (left or right)
@ -71,6 +78,7 @@ typedef struct
compass_direction_t orientation;
angle_t roll_angle;
angle_t pitch_angle;
calibration_data_t *calibration_data;
} direction_t;
#endif

79
frtos/magnetometer/magnetometer_direction.h
View File

@ -310,54 +310,45 @@ updateDirection(volatile direction_t * g_direction)
static int cur_x = 0;
static int cur_y = 0;
read_magnetometer(magnetometer);
read_accelerometer(accelerometer);
read_magnetometer(magnetometer, g_direction);
read_accelerometer(accelerometer, g_direction);
read_temperature(temperature);
read_direction(accelerometer, magnetometer, g_direction);
print_orientation_data(*g_direction);
// Temperature in degrees Celsius
// printf("Temperature: %d\n", temperature[0]);
// print_orientation_data();
// printf("Direction: ");
// print_direction(g_direction.orientation);
switch (g_direction->orientation)
{
case NORTH:
cur_y++;
break;
case EAST:
cur_x++;
break;
case SOUTH:
cur_y--;
break;
case WEST:
cur_x--;
break;
case NORTH_EAST:
cur_x++;
cur_y++;
break;
case SOUTH_EAST:
cur_x++;
cur_y--;
break;
case SOUTH_WEST:
cur_x--;
cur_y--;
break;
case NORTH_WEST:
cur_x--;
cur_y++;
break;
}
// print_orientation_data(*g_direction);
//
// switch (g_direction->orientation)
// {
// case NORTH:
// cur_y++;
// break;
// case EAST:
// cur_x++;
// break;
// case SOUTH:
// cur_y--;
// break;
// case WEST:
// cur_x--;
// break;
// case NORTH_EAST:
// cur_x++;
// cur_y++;
// break;
// case SOUTH_EAST:
// cur_x++;
// cur_y--;
// break;
// case SOUTH_WEST:
// cur_x--;
// cur_y--;
// break;
// case NORTH_WEST:
// cur_x--;
// cur_y++;
// break;
// }
// Update the map based on the direction of the car (N, E, S, W)
// update_map(g_direction.orientation, cur_x, cur_y);

72
frtos/magnetometer/magnetometer_init.h
View File

@ -29,24 +29,6 @@
// Semaphores
SemaphoreHandle_t g_direction_sem = NULL;
// direction_t g_direction = {
// .roll = 0,
// .pitch = 0,
// .yaw = 0,
// .orientation = NORTH,
// .roll_angle = LEFT,
// .pitch_angle = UP
// };
struct s_calibration_data
{
int16_t accelerometerBias[3];
int16_t magnetometerBias[3];
};
struct s_calibration_data g_calibration_data
= { .accelerometerBias = { 0, 0, 0 }, .magnetometerBias = { 0, 0, 0 } };
/**
* @brief Read Data with I2C, given the address and register
* @param addr Address of the device
@ -72,7 +54,7 @@ read_data(uint8_t addr, uint8_t reg)
* @param accelerometer Accelerometer Data
*/
static inline void
read_accelerometer(int16_t accelerometer[3])
read_accelerometer(int16_t accelerometer[3], volatile direction_t *p_direction)
{
uint8_t buffer[6];
@ -95,9 +77,9 @@ read_accelerometer(int16_t accelerometer[3])
accelerometer[2] = (int16_t)((buffer[5] << 8) | buffer[4]);
// Apply the calibration data
accelerometer[0] -= g_calibration_data.accelerometerBias[0];
accelerometer[1] -= g_calibration_data.accelerometerBias[1];
accelerometer[2] -= g_calibration_data.accelerometerBias[2];
accelerometer[0] -= p_direction->calibration_data->accelerometerBias[0];
accelerometer[1] -= p_direction->calibration_data->accelerometerBias[1];
accelerometer[2] -= p_direction->calibration_data->accelerometerBias[2];
}
/**
@ -105,7 +87,7 @@ read_accelerometer(int16_t accelerometer[3])
* @param magnetometer Magnetometer Data
*/
static inline void
read_magnetometer(int16_t magnetometer[3])
read_magnetometer(int16_t magnetometer[3], volatile direction_t *p_direction)
{
uint8_t buffer[6];
int32_t xMagFiltered = 0;
@ -133,9 +115,9 @@ read_magnetometer(int16_t magnetometer[3])
magnetometer[2] = zMagFiltered / NUM_READINGS;
// Apply the calibration data
magnetometer[0] -= g_calibration_data.magnetometerBias[0];
magnetometer[1] -= g_calibration_data.magnetometerBias[1];
magnetometer[2] -= g_calibration_data.magnetometerBias[2];
magnetometer[0] -= p_direction->calibration_data->magnetometerBias[0];
magnetometer[1] -= p_direction->calibration_data->magnetometerBias[1];
magnetometer[2] -= p_direction->calibration_data->magnetometerBias[2];
}
/**
@ -167,8 +149,13 @@ read_temperature(int16_t temperature[1])
temperature[0] = (int16_t)temperature_celsius;
}
/**
* @brief Calibrate the Magnetometer Sensor via bias values
*
* @return None
*/
void
initial_calibration()
initial_calibration(direction_t *p_direction)
{
int16_t accelerometer[3];
int16_t magnetometer[3];
@ -184,8 +171,8 @@ initial_calibration()
{
printf("Calibrating... %d\n", i);
read_accelerometer(accelerometer);
read_magnetometer(magnetometer);
read_accelerometer(accelerometer, p_direction);
read_magnetometer(magnetometer, p_direction);
for (int j = 0; j < 3; j++)
{
@ -209,29 +196,29 @@ initial_calibration()
sleep_ms(10);
}
g_calibration_data.accelerometerBias[0]
p_direction->calibration_data->accelerometerBias[0]
= (accelerometerMax[0] + accelerometerMin[0]) / 2;
g_calibration_data.accelerometerBias[1]
p_direction->calibration_data->accelerometerBias[1]
= (accelerometerMax[1] + accelerometerMin[1]) / 2;
g_calibration_data.accelerometerBias[2]
p_direction->calibration_data->accelerometerBias[2]
= (accelerometerMax[2] + accelerometerMin[2]) / 2;
g_calibration_data.magnetometerBias[0]
p_direction->calibration_data->magnetometerBias[0]
= (magnetometerMax[0] + magnetometerMin[0]) / 2;
g_calibration_data.magnetometerBias[1]
p_direction->calibration_data->magnetometerBias[1]
= (magnetometerMax[1] + magnetometerMin[1]) / 2;
g_calibration_data.magnetometerBias[2]
p_direction->calibration_data->magnetometerBias[2]
= (magnetometerMax[2] + magnetometerMin[2]) / 2;
printf("Accelerometer Bias: %d, %d, %d\n",
g_calibration_data.accelerometerBias[0],
g_calibration_data.accelerometerBias[1],
g_calibration_data.accelerometerBias[2]);
p_direction->calibration_data->accelerometerBias[0],
p_direction->calibration_data->accelerometerBias[1],
p_direction->calibration_data->accelerometerBias[2]);
printf("Magnetometer Bias: %d, %d, %d\n",
g_calibration_data.magnetometerBias[0],
g_calibration_data.magnetometerBias[1],
g_calibration_data.magnetometerBias[2]);
p_direction->calibration_data->magnetometerBias[0],
p_direction->calibration_data->magnetometerBias[1],
p_direction->calibration_data->magnetometerBias[2]);
}
/**
@ -298,6 +285,9 @@ magnetometer_init(car_struct_t *p_car_struct)
p_car_struct->p_direction->orientation = NORTH;
p_car_struct->p_direction->roll_angle = LEFT;
p_car_struct->p_direction->pitch_angle = UP;
calibration_data_t g_calibration_data
= { .accelerometerBias = { 0, 0, 0 }, .magnetometerBias = { 0, 0, 0 } };
p_car_struct->p_direction->calibration_data = &g_calibration_data;
printf("Magnetometer Initialising\n");
i2c_init(I2C_PORT, 400 * 1000);