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kx122: Moved definitions, documentation tweaks

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Signed-off-by: Samuli Rissanen <samuli.rissanen@hotmail.com>
Signed-off-by: Noel Eck <noel.eck@intel.com>
This commit is contained in:
Samuli Rissanen
2018-02-23 13:17:37 +02:00
parent 2a17fe094e
commit ad36f83857
4 changed files with 105 additions and 66 deletions
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58
src/kx122/kx122.c
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@ -24,7 +24,51 @@
#include "kx122.h"
//Used to set the bit required for SPI reading
#define SPI_READ 0x80
//Used to mask the read bit required for SPI writing
#define SPI_WRITE 0x7F
//Used to determine amount of samples in the buffer.
#define LOW_RES_SAMPLE_MODIFIER 3
#define HIGH_RES_SAMPLE_MODIFIER 6
//Mask for software reset
#define KX122_CNTL2_SRST_MASK 0x80
//Masks for interrupt control registers
#define KX122_INC1_MASK 0xFB
#define KX122_INC4_MASK 0xF7
#define KX122_INC5_MASK 0xFB
#define KX122_INC6_MASK 0xF7
//Acceleration data buffer length
#define BUFFER_LEN 6
//Acceleration per decimal value for each acceleration ranges
#define RANGE_2G_G 0.00006f
#define RANGE_4G_G 0.00012f
#define RANGE_8G_G 0.00024f
//Acceleration scaling between high and low resolution modes
#define RANGE_RES_SCALE 260
//Maximum loop iterations, used in software reset and self testing
#define MAX_LOOP_COUNT 100
//Sensor self-test defines
#define SELF_TEST_LOOP_WAIT_TIME 10000
#define SELF_TEST_MAX_DIFFERENCE 0.75f
#define SELF_TEST_MIN_XY_DIFFERENCE 0.25f
#define SELF_TEST_MIN_Z_DIFFERENCE 0.20f
//Maximum amount of samples in the buffer for high and low resolutions
#define MAX_BUFFER_SAMPLES_LOW_RES 681
#define MAX_BUFFER_SAMPLES_HIGH_RES 340
//Earth gravity constant (m/s^2)
#define GRAVITY 9.81f
/**
Enables the chip select on the chip_select GPIO pin.
Chip select is active low.
@ -820,10 +864,20 @@ upm_result_t kx122_clear_interrupt(const kx122_context dev)
return kx122_read_register(dev,KX122_INT_REL,&reg_val);
}
upm_result_t kx122_get_interrupt_status(const kx122_context dev, uint8_t *data)
bool kx122_get_interrupt_status(const kx122_context dev)
{
assert(dev != NULL);
return kx122_read_register(dev,KX122_STATUS_REG,data);
uint8_t reg_val;
if(kx122_read_register(dev,KX122_STATUS_REG,&reg_val) != UPM_SUCCESS){
printf("%s: kx122_read_register() failed.\n", __FUNCTION__);
return false;
}
if(reg_val != 0x00){
return true;
}
return false;
}
upm_result_t kx122_enable_buffer(const kx122_context dev)