291 lines
8.2 KiB
C
291 lines
8.2 KiB
C
#include "gyro_ADXRS473.h"
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#include "spi_nb.h"
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#include <stdio.h>
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#define NB_MAX_CHAR_GYRO 4
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struct {
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unsigned short SQ:3;
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unsigned short ST:2;
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unsigned short P0:1;
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unsigned short P1:1;
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unsigned short PLL:1;
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unsigned short Q:1;
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unsigned short NVM:1;
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unsigned short POR:1;
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unsigned short PWR:1;
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unsigned short CST:1;
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unsigned short CHK:1;
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signed int rateData;
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} Gyro_SensorData;
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void Gyro_traitementDonnees(unsigned char * tamponRecu);
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unsigned char pariteOctet(unsigned char octet);
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int gyro_read_register_blocking(uint8_t registrer, uint8_t *tampon, uint8_t nb_a_lire){
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uint8_t tampon_envoi[4]="\0\0\0\0";
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int nb_recu;
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tampon_envoi[0] = registrer;
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// Envoie commande N
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cs_select();
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spi_write_blocking(spi0, tampon_envoi, 4);
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nb_recu = spi_read_blocking(spi0, 0, tampon, nb_a_lire);
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cs_deselect();
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// lire reponse N
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cs_select();
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spi_write_blocking(spi0, tampon_envoi, 4);
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nb_recu = spi_read_blocking(spi0, 0, tampon, nb_a_lire);
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cs_deselect();
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}
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int gyro_init_check(){
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// Renvoi 0 si l'initialisation s'est bien passée
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// Renvoi 1 si le gyroscope n'a pas répondu
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uint8_t tampon[5]="\0\0\0\0\0";
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gyro_read_register_blocking(0x0C, tampon, 1);
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Gyro_traitementDonnees(tampon);
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printf("Init check : %#06x\n", Gyro_SensorData.rateData);
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/* if(tampon[0] == 0xd7){
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return 0;
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}*/
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return 1;
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}
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int gyro_config(){
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// Registre CTRL1
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// DR : 11
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// BW : 10
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// PD : 1
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// Zen : 1
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// Yen : 1
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// Xen : 1
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uint8_t config = 0b11101111;
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uint16_t tampon[2] = {0x20, config};
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uint8_t tampon2[10]="\0\0\0\0\0\0\0\0\0";
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int statu, nb_read;
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//while(spi_nb_busy(spi0) == SPI_BUSY);
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cs_select();
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int rep = spi_nb_write_data(spi0, tampon, 2);
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if(rep == SPI_ERR_TRANSMIT_FIFO_FULL){
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printf("Erreur: spi_read_register: SPI_ERR_TRANSMIT_FIFO_FULL\n");
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//return statu;
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}
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while(spi_nb_busy(spi0));
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cs_deselect();
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int nb_lu = spi_read_register(spi0, 0x20, tampon2, 1);
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printf("Nb lu: %d\n", nb_lu);
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if(tampon2[1] == config){
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//puts("gyro_config ok !");
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return 0;
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}else{
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//printf("gyro_config FAILED ! :%#4x\n", tampon2[1]);
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return 1;
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}
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// Registre
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}
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void gyro_get_vitesse_brute(struct t_angle_gyro* angle_gyro, struct t_angle_gyro* angle_gyro_moy){
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uint8_t tampon[10]="\0\0\0\0\0\0\0\0\0";
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int16_t rot_x, rot_y, rot_z;
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spi_read_register(spi0, 0x28, tampon, 6);
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rot_x = -(tampon[1] + (tampon[2] << 8));
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rot_y = -(tampon[3] + (tampon[4] << 8));
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rot_z = -(tampon[5] + (tampon[6] << 8));
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if(angle_gyro_moy == NULL){
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angle_gyro->rot_x = (int32_t) rot_x * 32;
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angle_gyro->rot_y = (int32_t) rot_y * 32;
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angle_gyro->rot_z = (int32_t) rot_z * 32;
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}else{
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angle_gyro->rot_x = (int32_t) rot_x * 32 - angle_gyro_moy->rot_x;
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angle_gyro->rot_y = (int32_t) rot_y * 32 - angle_gyro_moy->rot_y;
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angle_gyro->rot_z = (int32_t) rot_z * 32 - angle_gyro_moy->rot_z;
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}
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}
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void gyro_get_vitesse_normalisee(struct t_angle_gyro* _vitesse_angulaire,
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struct t_angle_gyro_double * _vitesse_gyro){
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_vitesse_gyro->rot_x = (double)_vitesse_angulaire->rot_x * 0.00875 / 32.0;
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_vitesse_gyro->rot_y = (double)_vitesse_angulaire->rot_y * 0.00875 / 32.0;
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_vitesse_gyro->rot_z = (double)_vitesse_angulaire->rot_z * 0.00875 / 32.0;
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}
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inline unsigned char Gyro_commande_SensorData(unsigned char autotest){
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// On met SQ2 à 1 afin de différencier facilement une erreur et des données
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uint8_t tamponGyroscopeEnvoi[4];
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tamponGyroscopeEnvoi[0] = 0x30;
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tamponGyroscopeEnvoi[1] = 0x00;
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tamponGyroscopeEnvoi[2] = 0x00;
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if (autotest){
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tamponGyroscopeEnvoi[3] = 0x03;
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}else{
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tamponGyroscopeEnvoi[3] = 0x01;
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}
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// La parité, dans ce cas est triviale, autant prévoir tous les cas
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//Gyro_commande_PariteData(tamponGyroscopeEnvoi);
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//return SPI_envData(tamponGyroscopeEnvoi);
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}
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void Gyro_commande_PariteData(unsigned char* tampon){
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unsigned char parite=0,i;
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// Obtention de la parité actuelle
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for(i=0 ; i< NB_MAX_CHAR_GYRO ; i++){
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parite ^= pariteOctet(tampon[i]);
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}
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// On veut une parité impaire
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parite ^= 0x01;
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// On insere ce bit dans le message, au bon endroit
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tampon[NB_MAX_CHAR_GYRO-1] = tampon[NB_MAX_CHAR_GYRO-1] | parite;
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}
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unsigned char pariteOctet(unsigned char octet){
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unsigned char parite=0,i;
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for (i=0 ; i<8 ; i++){
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parite ^= octet & 0x01;
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octet = octet >> 1;
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}
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return parite;
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}
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void Gyro_traitementDonnees(unsigned char * tamponRecu){
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Gyro_SensorData.SQ = (tamponRecu[0]>>5) & 0x07;
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Gyro_SensorData.P0 = (tamponRecu[0]>>4) & 0x01;
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Gyro_SensorData.ST = (tamponRecu[0]>>2) & 0x03;
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Gyro_SensorData.rateData = (int)
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( (0xC000 &((unsigned int) (tamponRecu[0] & 0x03)<<14)) |
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( 0x3FC0 & ((unsigned int) tamponRecu[1] << 6)) |
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( 0x003F & (unsigned int) ( tamponRecu[2] >> 2)));
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Gyro_SensorData.PLL = (tamponRecu[3] & 0x80) >> 7;
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Gyro_SensorData.Q = (tamponRecu[3] & 0x40) >> 6;
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Gyro_SensorData.NVM = (tamponRecu[3] & 0x20) >> 5;
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Gyro_SensorData.POR = (tamponRecu[3] & 0x10) >> 4;
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Gyro_SensorData.PWR = (tamponRecu[3] & 0x08) >> 3;
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Gyro_SensorData.CST = (tamponRecu[3] & 0x04) >> 2;
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Gyro_SensorData.CHK = (tamponRecu[3] & 0x02) >> 1;
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Gyro_SensorData.P1 = (tamponRecu[3] & 0x01);
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}
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/*
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unsigned char Gyro_gestion(void){
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Gyro_commande_SensorData(0);
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while(!SPI_recData(GyroscopeReception));
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Gyro_traitementDonnees(GyroscopeReception);
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if (Gyro_SensorData.SQ & 0x04){
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Gyro_Angle +=(long) (Gyro_SensorData.rateData - angle0);
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//Gyro_Angle = angle0;
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}else{
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Gyro_Angle = (long)0x3333;
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}
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return 0;
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}
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inline unsigned char Gyro_gestion_nb(){
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if(SPI_recData(GyroscopeReception)){
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Gyro_traitementDonnees(GyroscopeReception);
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if (Gyro_SensorData.SQ & 0x04)
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// calcul du nouvel angle
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// TODO : Améliorer la stabilitée en augmentant la précision
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Gyro_Angle +=(long) ((long)Gyro_SensorData.rateData - (long)angle0);
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return 0;
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}
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return 1;
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}
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int Gyro_getAngle(void){
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// 80° par secondes
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// 5 kHz => 200 µs
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// Gyro_Angle en 1,6 e-2 degré
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return (int)(-Gyro_Angle / 5000 / 80);
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}
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long Gyro_getRawAngle(void){
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// 80° par secondes
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// 5 kHz => 200 µs
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// Gyro_Angle en 1,6 e-2 degré
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return Gyro_Angle ;
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}
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long double Gyro_getAngleRadian(void){
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// 80° par secondes
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// 5 kHz => 200 µs
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// Gyro_Angle en 1,6 e-2 degré
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return -Gyro_Angle * GYRO_COEF_RADIAN_5kHz;
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}
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unsigned char * Gyro_getRawData(){
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return GyroscopeReception;
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}
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int Gyro_init(){
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long long calcul_angle0;
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int i, erreur_gyro;
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Gyro_Timer_ms=100;
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while(Gyro_Timer_ms);
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// Envoie message auto-test des test
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while(!Gyro_commande_SensorData(1));
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while(!SPI_recData(GyroscopeReception));
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// Attente 50 ms - les tests doivent indiquer des erreur
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Gyro_Timer_ms=50;
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while(Gyro_Timer_ms);
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while(!Gyro_commande_SensorData(0));
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while(!SPI_recData(GyroscopeReception));
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// Attente 50 ms - les erreurs doivent s'être effacées
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Gyro_Timer_ms=50;
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while(Gyro_Timer_ms);
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while(!Gyro_commande_SensorData(0));
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while(!SPI_recData(GyroscopeReception));
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// Calibration du gyroscope
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calcul_angle0 = 0;
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i=0;
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erreur_gyro = 0;
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while((i<NB_ACQ_CALIBRATION) && (erreur_gyro < NB_MAX_ERREUR_GYRO)){
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while(!Gyro_commande_SensorData(0));
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while(!SPI_recData(GyroscopeReception));
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Gyro_traitementDonnees(GyroscopeReception);
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if (Gyro_SensorData.SQ & 0x04){
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calcul_angle0 += Gyro_SensorData.rateData;
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erreur_gyro = 0;
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i++;
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}else{
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erreur_gyro++;
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}
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__delay32(2000); // 50 µs
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}
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if (erreur_gyro < NB_MAX_ERREUR_GYRO){
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erreur_gyro = 0;
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// TODO : Améliorer la stabilitée en augmentant la précision
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angle0 = (long)(calcul_angle0 / NB_ACQ_CALIBRATION);
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Gyro_Pret=1;
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}else{
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erreur_gyro = 1;
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}
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return erreur_gyro;
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}
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*/ |