mirror of https://github.com/ARMmbed/mbed-os.git
57 lines
1.7 KiB
C++
57 lines
1.7 KiB
C++
#include "mbed.h"
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#include "MMA8451Q.h"
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#include "test_env.h"
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#ifdef TARGET_KL05Z
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#define SDA PTB4
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#define SCL PTB3
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#elif TARGET_K20D50M
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#define SDA PTB1
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#define SCL PTB0
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#else
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#define SDA PTE25
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#define SCL PTE24
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#endif
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namespace {
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const int MMA8451_I2C_ADDRESS = 0x1D << 1; // I2C bus address
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const float MMA8451_DIGITAL_SENSITIVITY = 4096.0; // Counts/g
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}
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float calc_3d_vector_len(float x, float y, float z) {
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return sqrt(x*x + y*y + z*z);
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}
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#define TEST_ITERATIONS 25
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#define TEST_ITERATIONS_SKIP 5
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#define MEASURE_DEVIATION_TOLERANCE 0.025 // 2.5%
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int main(void) {
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MBED_HOSTTEST_TIMEOUT(15);
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MBED_HOSTTEST_SELECT(default_auto);
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MBED_HOSTTEST_DESCRIPTION(MMA8451Q accelerometer);
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MBED_HOSTTEST_START("KL25Z_5");
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DigitalOut led(LED_GREEN);
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MMA8451Q acc(SDA, SCL, MMA8451_I2C_ADDRESS);
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bool result = true;
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printf("WHO AM I: 0x%2X\r\n\n", acc.getWhoAmI());
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for (int i = 0; i < TEST_ITERATIONS; i++) {
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if (i < TEST_ITERATIONS_SKIP) {
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// Skip first 5 measurements
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continue;
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}
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const float g_vect_len = calc_3d_vector_len(acc.getAccX(), acc.getAccY(), acc.getAccZ()) / MMA8451_DIGITAL_SENSITIVITY;
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const float deviation = fabs(g_vect_len - 1.0);
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const char *succes_str = deviation <= MEASURE_DEVIATION_TOLERANCE ? "[OK]" : "[FAIL]";
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result = result && (deviation <= MEASURE_DEVIATION_TOLERANCE);
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printf("X:% 6d Y:% 6d Z:% 5d GF:%0.3fg, dev:%0.3f ... %s\r\n", acc.getAccX(), acc.getAccY(), acc.getAccZ(), g_vect_len, deviation, succes_str);
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wait(0.5);
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led = !led;
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}
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MBED_HOSTTEST_RESULT(result);
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}
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