TMSG44-CoolPi/Devices/potentiometer.c

#include "potentiometer.h"



void potentiometer_set(void *bar1, 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);
    uint32_t *spi_mode = bar1 + CFG_REG_ADDR;
    *spi_mode = 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);
    uint32_t *ptr = bar1 + LMX_BASE_ADDR;
    *ptr = pot_header;
    // Send the data
    *ptr = pot_ch_a;
    *ptr = 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);
    *spi_mode = cfg_reg;
    set_cfg_reg(cfg_reg);
    usleep(1);
}