TMSG44-CoolPi/Devices/potentiometer.c

#include "potentiometer.h"
#include "tmsgheaders.h"

uint32_t pot_array [2]  = {0,0};
double freq_file [FILE_ROWS] = {0};
uint32_t pot_offset [FILE_ROWS]= {0};
uint32_t pot_slope [FILE_ROWS]= {0};

uint32_t pot_ch_a_file;
uint32_t pot_ch_b_file;


/* arrays of potentiometer values from file  */

void potentiometer_set(reg_addr_pci* pci_bar_1, uint8_t pot_val_ch_a, uint8_t pot_val_ch_b) {
    usleep(1);
    uint32_t cfg_reg = get_cfg_reg();
    SET_REGISTER_PARAM(cfg_reg, CFG_REG_SPI_MODE_BITM, CFG_REG_SPI_MODE_BITP, CFG_REG_SPI_MODE_4MOSI);
    pci_bar_1->cfg_reg_addr = cfg_reg;
    
    uint32_t pot_ch_a	=	(TPL0202_CMD_WR_WIPER_REG_ENUM << TPL0202_CMD_BITP)|(TPL0202_ADR_B_ENUM << TPL0202_ADR_BITP)|(pot_val_ch_a << TPL0202_DATA_BITP);
    uint32_t pot_ch_b	=	(TPL0202_CMD_WR_WIPER_REG_ENUM << TPL0202_CMD_BITP)|(TPL0202_ADR_A_ENUM << TPL0202_ADR_BITP)|(pot_val_ch_b << TPL0202_DATA_BITP);
    
    // Create a header for the Potentiometer 4MOSI
    uint32_t pot_header = (ENUM_SPIMODE_4MOSI | (0x2 << BITP_POT_4MOSI_HEADER) | SB_HEADER_TERM_BIT_1);
    pci_bar_1->sbtmsg_addr = pot_header;
    
    // Send the data
    pci_bar_1->sbtmsg_addr = pot_ch_a;
    pci_bar_1->sbtmsg_addr = pot_ch_b;
    usleep(1);

    SET_REGISTER_PARAM(cfg_reg, CFG_REG_SPI_MODE_BITM, CFG_REG_SPI_MODE_BITP, CFG_REG_SPI_MODE_1MOSI);
    pci_bar_1->cfg_reg_addr = cfg_reg;
    set_cfg_reg(cfg_reg);
    usleep(1);
}
/* Read the potentiometer values from the file */
void read_pot_file (const char* filename) {
    FILE *file = fopen(filename, "r");
    if (file == NULL) {
        printf("Error: File not found\n");
        return;
    }
    int i = 0;
    while (fscanf(file, "%lf %u %u", &freq_file[i], &pot_slope[i], &pot_offset[i]) != EOF) {
        i++;
    }
    fclose(file);
}

void set_pot_values(double freq){
    for (int i = 0; i < FILE_ROWS; i++) {
        if (freq <= freq_file[i]) {
          if (i == 0) {
            pot_ch_a_file = (TPL0202_CMD_WR_WIPER_REG_ENUM << TPL0202_CMD_BITP)|(TPL0202_ADR_A_ENUM << TPL0202_ADR_BITP)|(pot_offset[i] << TPL0202_DATA_BITP);
            pot_ch_b_file = (TPL0202_CMD_WR_WIPER_REG_ENUM << TPL0202_CMD_BITP)|(TPL0202_ADR_B_ENUM << TPL0202_ADR_BITP)|(pot_slope[i]<< TPL0202_DATA_BITP);
            break;
          }
          pot_ch_a_file = (TPL0202_CMD_WR_WIPER_REG_ENUM << TPL0202_CMD_BITP)|(TPL0202_ADR_A_ENUM << TPL0202_ADR_BITP)|(pot_offset[i-1] << TPL0202_DATA_BITP);
          pot_ch_b_file = (TPL0202_CMD_WR_WIPER_REG_ENUM << TPL0202_CMD_BITP)|(TPL0202_ADR_B_ENUM << TPL0202_ADR_BITP)|(pot_slope[i-1]<< TPL0202_DATA_BITP);
          break;
        }
    }
}

void potentiometer_set_offset (reg_addr_pci* pci_bar_1, uint8_t pot_offset) {
    uint32_t pot_ch_a	=	(TPL0202_CMD_WR_WIPER_REG_ENUM << TPL0202_CMD_BITP)|(TPL0202_ADR_A_ENUM << TPL0202_ADR_BITP)|(pot_offset << TPL0202_DATA_BITP);
    //Create a header
    pci_bar_1->sbtmsg_addr = ((ENUM_SPIMODE_4MOSI) |(0x1 << BITP_POT_4MOSI_HEADER)| TERM_BIT_1);
    pci_bar_1->sbtmsg_addr = pot_ch_a;

}

void potentiometer_set_slope (reg_addr_pci* pci_bar_1, uint8_t pot_slope) {
    uint32_t pot_ch_b	=	(TPL0202_CMD_WR_WIPER_REG_ENUM << TPL0202_CMD_BITP)|(TPL0202_ADR_B_ENUM << TPL0202_ADR_BITP)|(pot_slope << TPL0202_DATA_BITP);
    //Create a header
    pci_bar_1->sbtmsg_addr = ((ENUM_SPIMODE_4MOSI) |(0x1 << BITP_POT_4MOSI_HEADER)| TERM_BIT_1);
    pci_bar_1->sbtmsg_addr = pot_ch_b;

}