Tool/software:
Unfortunately, the autonomous mode on my LP5080 is not working as expected. In the following code, an LED should theoretically start at 0, increase to a certain brightness, and then return to 0. However, with this code, the LED starts very bright and then becomes unpredictably dimmer and brighter. Where could the issue lie?
When I control each LED individually, everything works as intended. The brightness can be adjusted using current and PWM, and manual dimming through loops works perfectly as well.
#include <i2c.h>
#include <LP5810.h>
/*Chip address*/
#define I2C_LP581X_5BIT_ADDRESS 0x15
/***************************************************************************//**
*Register Address
******************************************************************************/
/* Device Configuration Register Address*/
#define Chip_Enable_Register 0x000
#define Dev_Config0_Register 0x001//Max Current Sink Current & Boost Output Voltage
#define Dev_Config1_Register 0x002//Direct Connected Outputs(Only effective when configured to Mix Drive Mode) & LED Configuration & PWM Dimming Frequency Setting
#define Dev_Config2_Register 0x003//Scan Line FET Number in Matrix Mode
#define Dev_Config3_Register 0x004//LED Autonomous Control Enable
#define Dev_Config4_Register 0x005//LED Autonomous Control Enable
#define Dev_Config5_Register 0x006//LED Exponential Dimming Curve Enable
#define Dev_Config6_Register 0x007//LED Exponential Dimming Curve Enable
#define Dev_Config7_Register 0x008//PWM Phase Align Method
#define Dev_Config8_Register 0x009//PWM Phase Align Method
#define Dev_Config9_Register 0x00A//PWM Phase Align Method
#define Dev_Config10_Register 0x00B//PWM Phase Align Method
#define Dev_Config11_Register 0x00C//Line Change Time & Vsync setting
#define Dev_Config12_Register 0x00D//LSD Fault Comparator Threshold & Action When LSD/LOD & Clamp Behavior setting
/*Command registers*/
#define Update_CMD_REG 0x010 //Write 55h to send this command
#define Start_CMD_REG 0x011 //Write FFh to send this command
#define Stop_CMD_REG 0x012 //Write AAh to send this command
#define Pause_CMD_REG 0x013 //Write 33h to send this command
#define Continue_CMD_REG 0x014 //Write CCh to send this command
/*LED_EN Registers*/
#define LED_EN1 0x020
/*FAULT_CLEAR REGISTERS*/
#define Fault_CLR_REG 0x022
/*RESET REGISTERS*/
#define RESET_REG 0x023
/*MANUAL_DC REGISTERS*/
/*LED0/LED1/LED2/LED3/LED_A0/LED_A1/LED_A2/LED_B0/LED_B1/LED_B2/LED_C0/LED_C1/LED_C2/LED_D0/LED_D1/LED_D2/ */
#define Manual_DC_GAP 0x001
#define Manual_DC_LED_1 0x030
#define Manual_DC_LED_2 0x031
#define Manual_DC_LED_3 0x032
#define Manual_DC_LED_4 0x033
/*MANUAL_PWM REGISTERS*/
/*LED0/LED1/LED2/LED3/LED_A0/LED_A1/LED_A2/LED_B0/LED_B1/LED_B2/LED_C0/LED_C1/LED_C2/LED_D0/LED_D1/LED_D2/ */
#define Manual_PWM_GAP 0x001
#define Manual_PWM_LED_1 0x040
#define Manual_PWM_LED_2 0x041
#define Manual_PWM_LED_3 0x042
#define Manual_PWM_LED_4 0x043
/*MANUAL_DC REGISTERS*/
/*LED0/LED1/LED2/LED3/LED_A0/LED_A1/LED_A2/LED_B0/LED_B1/LED_B2/LED_C0/LED_C1/LED_C2/LED_D0/LED_D1/LED_D2/ */
#define Auto_DC_GAP 0x001
#define Auto_DC_START 0x050
/*AUTONOMOUS CONTROL REGISTERS*/
/*LED0/LED1/LED2/LED3/LED_A0/LED_A1/LED_A2/LED_B0/LED_B1/LED_B2/LED_C0/LED_C1/LED_C2/LED_D0/LED_D1/LED_D2/ */
#define LED_AEU_GAP 0x01A
#define AEU_GAP 0x008
#define LED0_Pause_Time 0x080
#define LED0_Playback_Time 0x081
#define LED0_AEU1_PWM1 0x082
#define LED0_AEU1_PWM2 0x083
#define LED0_AEU1_PWM3 0x084
#define LED0_AEU1_PWM4 0x085
#define LED0_AEU1_PWM5 0x086
#define LED0_AEU1_SlOPE_TIME1 0x087
#define LED0_AEU1_SlOPE_TIME2 0x088
#define LED0_AEU1_PT1 0x089
#define LED0_AEU2_PWM1 0x08A
#define LED0_AEU2_PWM2 0x08B
#define LED0_AEU2_PWM3 0x08C
#define LED0_AEU2_PWM4 0x08D
#define LED0_AEU2_PWM5 0x08E
#define LED0_AEU2_SlOPE_TIME1 0x08F
#define LED0_AEU2_SlOPE_TIME2 0x090
#define LED0_AEU2_PT1 0x091
#define LED0_AEU3_PWM1 0x092
#define LED0_AEU3_PWM2 0x093
#define LED0_AEU3_PWM3 0x094
#define LED0_AEU3_PWM4 0x095
#define LED0_AEU3_PWM5 0x096
#define LED0_AEU3_SlOPE_TIME1 0x097
#define LED0_AEU3_SlOPE_TIME2 0x098
#define LED0_AEU3_PT1 0x099
#define LED1_Pause_Time 0x09A
#define LED1_Playback_Time 0x09B
#define LED1_AEU1_PWM1 0x09C
#define LED1_AEU1_PWM2 0x09D
#define LED1_AEU1_PWM3 0x09E
#define LED1_AEU1_PWM4 0x09F
#define LED1_AEU1_PWM5 0x0A0
#define LED1_AEU1_SlOPE_TIME1 0x0A1
#define LED1_AEU1_SlOPE_TIME2 0x0A2
#define LED1_AEU1_PT1 0x0A3
#define LED1_AEU2_PWM1 0x0A4
#define LED1_AEU2_PWM2 0x0A5
#define LED1_AEU2_PWM3 0x0A6
#define LED1_AEU2_PWM4 0x0A7
#define LED1_AEU2_PWM5 0x0A8
#define LED1_AEU2_SlOPE_TIME1 0x0A9
#define LED1_AEU2_SlOPE_TIME2 0x0AA
#define LED1_AEU2_PT1 0x0AB
#define LED1_AEU3_PWM1 0x0AC
#define LED1_AEU3_PWM2 0x0AD
#define LED1_AEU3_PWM3 0x0AE
#define LED1_AEU3_PWM4 0x0AF
#define LED1_AEU3_PWM5 0x0B0
#define LED1_AEU3_SlOPE_TIME1 0x0B1
#define LED1_AEU3_SlOPE_TIME2 0x0B2
#define LED1_AEU3_PT1 0x0B3
/* FLAG Register Address*/
#define TSD_CONFIG_STATUS 0x300
#define LOD_STATUS1 0x301
#define LOD_STATUS2 0x302
#define LSD_STATUS1 0x303
#define LSD_STATUS2 0x304
/* TEST Register Address*/
#define OTP_CONFIG_Register 0x352
#define SRAM_CONFIG_Register 0x353
#define CLOCK_GATING_EN_Register 0x354
uint8_t I2C_TARGET_ADDRESS;
uint8_t regAdr_8bit;
uint16_t regAdr_10bit;
/***************************************************************************//**
*Function Definition
******************************************************************************/
void initLP5810(){
// Reset and configure
writeRegister(RESET_REG, 0x66);
writeRegister(Chip_Enable_Register, 0x01);
writeRegister(Dev_Config0_Register, 0x0F); // 0x0 max current 25.5 mA, 0x0F 51 mA
writeRegister(Dev_Config1_Register, 0x40); // LED direct drive mode
writeRegister(Dev_Config3_Register, 0x0F); // Auto enable
writeRegister(Dev_Config5_Register, 0x0); // exponential diming off
writeRegister(Dev_Config12_Register, 0x0B);
// Update
updateCommand();
}
void LED_Fade_IN_And_OUT(){
// Set LED Auto - LED enable
writeRegister(LED_EN1, 0x0F);
// Update
updateCommand();
// Red LED AUto Start
writeRegister(0x051, 0x0F);
writeRegister(LED0_Pause_Time, 0x00); // APU1 and APU2 skipped
writeRegister(LED0_Playback_Time, 0x01); // one time
writeRegister(LED0_AEU1_PWM1, 0); // start at 0
writeRegister(LED0_AEU1_PWM2, 25);
writeRegister(LED0_AEU1_PWM3, 50); // rise to 50
writeRegister(LED0_AEU1_PWM4, 25);
writeRegister(LED0_AEU1_PWM5, 0); // end at 0
writeRegister(LED0_AEU1_SlOPE_TIME1, 0xAA); // 3 sek between all steps
writeRegister(LED0_AEU1_SlOPE_TIME2, 0xAA);
writeRegister(LED0_AEU1_PT1, 3); // repeat inf
delay_ms(5);
updateCommand();
delay_ms(5);
writeRegister(Start_CMD_REG, 0xFF);
}
updateCommand(){
regAdr_10bit = Update_CMD_REG;
I2C_TARGET_ADDRESS = (I2C_LP581X_5BIT_ADDRESS<<2) + (regAdr_10bit>>8);
regAdr_8bit = (uint8_t) regAdr_10bit;
I2C_Master_WriteRegByte(I2C_TARGET_ADDRESS, regAdr_8bit, 0x55); // update command to complete config
delay_ms(5);
}
writeRegister(uint16_t regAdr_10bit, uint8_t value){
I2C_TARGET_ADDRESS = (I2C_LP581X_5BIT_ADDRESS<<2) + (regAdr_10bit>>8);
regAdr_8bit = (uint8_t) regAdr_10bit;
I2C_Master_WriteRegByte(I2C_TARGET_ADDRESS, regAdr_8bit, value);
}
