#include <unistd.h> /*usleep*/
#include <pthread.h> /*threads*/
#include <time.h> /*nanosleep*/
+#include <string.h>
#include "rpin.h" /*gpclk*/
#include "rp_spi.h" /*spi*/
#include "pmsm_state.h"
#include "cmd_proc.h"
-#define MAX_DUTY 170
+
#define PID_P 0.3
+/* RL-tool results from first order system approx */
+/* P=0.16 I=13,4/freq=0.013 */
+/* Hodnoty upraveny podle skutecnych vysledku */
+/* P=0.8 I=0.01 */
+
+#define PID_P_S 0.16 /*2.3 kmita*/ /*1.4 vhodne jen pro P regulator*/
+#define PID_I_S 0.0134
+
#define PRIOR_KERN 50
#define PRIOR_HIGH 49
#define PRIOR_LOW 20
.index_dist=0, /* distance to index position */
.index_ok=0,
.tf_count=0, /*number of transfer*/
- .desired_pos=0 /* desired position */
+ .desired_pos=0, /* desired position */
+ .pos_reg_ena=0,
+ .desired_spd=0,
+ .spd_reg_ena=0,
+ .old_pos={0},
+ .spd_err_sum=0,
+ .log_col_count=0, /* pocet radku zaznamu */
+ .log_col=0,
+ .doLogs=0,
+ .alpha_offset=960
};
/**
return x;
}
+/*
+ * \brief
+ * Free logs
+ */
+void freeLogs(){
+ int r;
+ if (rps.log_col_count){
+ for (r=0;r<LOG_ROWS;r++){
+ free(rps.logs[r]);
+ }
+ }
+ rps.log_col_count=0;
+ rps.doLogs=0;
+}
+
+/*
+ * \brief
+ * Makes log.
+ */
+void makeLog(){
+ int r;
+ if (rps.log_col==MAX_LOGS-1){
+ rps.doLogs=0;
+ return;
+ }
+ rps.logs[0][rps.log_col]=(int)rps.tf_count;
+ rps.logs[1][rps.log_col]=(int)rps.spi_dat->pozice;
+
+ rps.logs[2][rps.log_col]=(int)rps.pwm1;
+ rps.logs[3][rps.log_col]=(int)rps.pwm2;
+ rps.logs[4][rps.log_col]=(int)rps.pwm3;
+ rps.logs[5][rps.log_col]=rps.duty;
+
+ rps.logs[6][rps.log_col]=rps.desired_spd;
+ rps.logs[7][rps.log_col]=rps.speed;
+
+ rps.logs[8][rps.log_col]=(int)(rps.spi_dat->ch1/rps.spi_dat->adc_m_count);
+ rps.logs[9][rps.log_col]=(int)(rps.spi_dat->ch2/rps.spi_dat->adc_m_count);
+ rps.logs[10][rps.log_col]=(int)(rps.spi_dat->ch0/rps.spi_dat->adc_m_count);
+
+ rps.log_col++;
+ /*
+ if (rps.log_col==rps.log_col_count-1){
+ rps.log_col_count*=2;
+ rps.log_col_count%=MAX_LOGS;
+ for (r=0;r<LOG_ROWS;r++){
+ rps.logs[r]=realloc(rps.logs[r],rps.log_col_count*sizeof(int));
+ if (rps.logs[r]==NULL){
+ rps.doLogs=0;
+ rps.error=1;
+ }
+ }
+ }
+ */
+}
+
+/*
+ * \brief
+ * Pripravi psi buffer
+ */
+void prepare_tx(uint8_t * tx){
+
+ /*Data format:
+ * tx[4] - bity 95 downto 88 - bits that are sent first
+ * tx[5] - bity 87 downto 80
+ * tx[6] - bity 79 downto 72
+ * tx[7] - bity 71 downto 64
+ * tx[8] - bity 63 downto 56
+ * tx[9] - bity 55 downto 48
+ * tx[10] - bity 47 downto 40
+ * tx[11] - bity 39 downto 32
+ * tx[12] - bity 31 downto 24
+ * tx[13] - bity 23 downto 16
+ * tx[14] - bity 15 downto 8
+ * tx[15] - bity 7 downto 0
+ *
+ * bit 95 - ADC reset
+ * bit 94 - enable PWM1
+ * bit 93 - enable PWM2
+ * bit 92 - enable PWM3
+ * bit 91 - shutdown1
+ * bit 90 - shutdown2
+ * bit 89 - shutdown3
+ * .
+ * .
+ * Unused
+ * .
+ * .
+ * bits 47 .. 32 - match PWM1
+ * bits 31 .. 16 - match PWM2
+ * bits 15 .. 0 - match PWM3
+ */
+
+
+ uint16_t tmp;
+
+ /* keep the 11-bit cap*/
+
+ if (rps.pwm1>2047) rps.pwm1=2047;
+ if (rps.pwm2>2047) rps.pwm2=2047;
+ if (rps.pwm3>2047) rps.pwm3=2047;
+
+ tx[0]=rps.test; /*bit 94 - enable PWM1*/
+
+ /*now we have to switch the bytes due to endianess */
+ /* ARMv6 & ARMv7 instructions are little endian */
+ /*pwm1*/
+ tx[10]=((uint8_t*)&rps.pwm1)[1]; /*MSB*/
+ tx[11]=((uint8_t*)&rps.pwm1)[0]; /*LSB*/
+
+ /*pwm2*/
+ tx[12]=((uint8_t*)&rps.pwm2)[1]; /*MSB*/
+ tx[13]=((uint8_t*)&rps.pwm2)[0]; /*LSB*/
+
+ /*pwm3*/
+ tx[14]=((uint8_t*)&rps.pwm3)[1]; /*MSB*/
+ tx[15]=((uint8_t*)&rps.pwm3)[0]; /*LSB*/
+
+
+}
+
+
/**
* \brief Signal handler pro Ctrl+C
*/
void appl_stop(){
+ uint8_t tx[16];
+ sem_wait(&rps.thd_par_sem);
+
+ memset(tx,0,16*sizeof(int));
+ rps.pwm1=0;
+ rps.pwm2=0;
+ rps.pwm3=0;
+ prepare_tx(tx); /*save the data to send*/
+ data=spi_read(tx);
+
spi_disable();
clk_disable();
+ freeLogs();
/*muzeme zavrit semafor*/
sem_destroy(&rps.thd_par_sem);
printf("\nprogram bezpecne ukoncen\n");
}
void substractOffset(struct rpi_in* data, struct rpi_in* offset){
- data->pozice_raw=data->pozice;
- data->pozice-=offset->pozice;
+ data->pozice=data->pozice_raw-offset->pozice_raw;
return;
}
/*
int32_t u1,u2,u3;
pos=rps.index_dist;
- pos+=960; /*zarovnani faze 'a' s osou 'alpha'*/
+ pos+=rps.alpha_offset; /*zarovnani faze 'a' s osou 'alpha'*/
/*pro výpočet sin a cos je pouzita 32-bit cyklicka logika*/
pos*=4294967;
rps.pwm2=(uint16_t)u2;
rps.pwm3=(uint16_t)u3;
}
-void prepare_tx(uint8_t * tx){
- /*Data format:
- * tx[4] - bity 95 downto 88 - bits that are sent first
- * tx[5] - bity 87 downto 80
- * tx[6] - bity 79 downto 72
- * tx[7] - bity 71 downto 64
- * tx[8] - bity 63 downto 56
- * tx[9] - bity 55 downto 48
- * tx[10] - bity 47 downto 40
- * tx[11] - bity 39 downto 32
- * tx[12] - bity 31 downto 24
- * tx[13] - bity 23 downto 16
- * tx[14] - bity 15 downto 8
- * tx[15] - bity 7 downto 0
- *
- * bit 95 - ADC reset
- * bit 94 - enable PWM1
- * bit 93 - enable PWM2
- * bit 92 - enable PWM3
- * bit 91 - shutdown1
- * bit 90 - shutdown2
- * bit 89 - shutdown3
- * .
- * .
- * Unused
- * .
- * .
- * bits 47 .. 32 - match PWM1
- * bits 31 .. 16 - match PWM2
- * bits 15 .. 0 - match PWM3
- */
-
-
- uint16_t tmp;
-
- /* keep the 11-bit cap*/
-
- if (rps.pwm1>2047) rps.pwm1=2047;
- if (rps.pwm2>2047) rps.pwm2=2047;
- if (rps.pwm3>2047) rps.pwm3=2047;
-
- tx[0]=rps.test; /*bit 94 - enable PWM1*/
-
- /*now we have to switch the bytes due to endianess */
- /* ARMv6 & ARMv7 instructions are little endian */
- /*pwm1*/
- tx[10]=((uint8_t*)&rps.pwm1)[1]; /*MSB*/
- tx[11]=((uint8_t*)&rps.pwm1)[0]; /*LSB*/
-
- /*pwm2*/
- tx[12]=((uint8_t*)&rps.pwm2)[1]; /*MSB*/
- tx[13]=((uint8_t*)&rps.pwm2)[0]; /*LSB*/
-
- /*pwm3*/
- tx[14]=((uint8_t*)&rps.pwm3)[1]; /*MSB*/
- tx[15]=((uint8_t*)&rps.pwm3)[0]; /*LSB*/
-
-
-}
/**
* Funkce pravidelne vypisuje posledni zjistenou pozici lokalniho motoru
*/
* Now only with P-part so that the error doesnt go to zero.
* TODO: add anti-wind up and I and D parts
*/
-inline void pid(){
+inline void pos_pid(){
int duty_tmp;
duty_tmp = PID_P*(rps.desired_pos - (int32_t)data.pozice);
if (duty_tmp>MAX_DUTY){
rps.duty = duty_tmp;
}
}
+/*
+ * \brief
+ * Very simple PID regulator.
+ * Now only with P-part so that the error doesnt go to zero.
+ * FIXME: make better
+ */
+inline void spd_pid(){
+ int duty_tmp;
+ int error;
+ error=rps.desired_spd - rps.speed;
+ rps.spd_err_sum+=error;
+ duty_tmp = PID_P_S*error+PID_I_S*rps.spd_err_sum;
+ if (duty_tmp>MAX_DUTY){
+ rps.duty=MAX_DUTY;
+ }else if (duty_tmp<-MAX_DUTY){
+ rps.duty=-MAX_DUTY;
+ }else{
+ rps.duty = duty_tmp;
+ }
+}
+
+/*
+ * \brief
+ * Computate speed.
+ */
+void compSpeed(){
+ signed long int spd;
+ spd=rps.spi_dat->pozice-rps.old_pos[rps.tf_count%OLD_POS_NUM];
+ rps.speed=(int32_t)spd;
+}
+
/*
* \brief
* Feedback loop.
+ * TODO: replace bunch of 'IFs' with Object-like pattern
*/
void * read_data(void* param){
int i;
/* wait until next shot */
clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &t, NULL);
sem_wait(&rps.thd_par_sem); /*---take semaphore---*/
+
+ /*old positions*/
+ rps.old_pos[rps.tf_count%OLD_POS_NUM]=rps.spi_dat->pozice;
prepare_tx(tx); /*save the data to send*/
data = spi_read(tx); /*exchange data*/
/*subtract initiate postion */
rps.tf_count++;
substractOffset(&data,&pocatek);
- comIndDist();
+ compSpeed(); /*spocita rychlost*/
+
if (!rps.index_ok){
if (first){
last_index=data.index_position;
first=0;
}else if (last_index!=data.index_position){
rps.index_ok=1;
+ comIndDist(); /*vypocet vzdalenosti indexu*/
}
+ }else{ /*index je v poradku*/
+ comIndDist(); /*vypocet vzdalenosti indexu*/
+ }
+
+ /* pocitame sirku plneni podle potreb rizeni*/
+ if (rps.pos_reg_ena){ /*pozicni rizeni*/
+ pos_pid();
+ }else if(rps.spd_reg_ena){ /*rizeni na rychlost*/
+ spd_pid();
}
- pid();
+
+ /* sirka plneni prepoctena na jednotlive pwm */
if (rps.index_ok && rps.commutate){
/*simple_ind_dist_commutator(rps.duty);*/
/*sin_commutator(rps.duty);*/
}else if(!rps.index_ok && rps.commutate){
simple_hall_commutator(rps.duty);
}
+
+ /*zalogujeme hodnoty*/
+ if (rps.doLogs && !(rps.tf_count%LOG_PERIOD)){
+ makeLog();
+ }
+
sem_post(&rps.thd_par_sem); /*--post semaphore---*/
/* calculate next shot */
}
-
/**
* \brief Main function.
*/
projects / fpga / rpi-motor-control.git / blobdiff