267 lines
8.7 KiB
C
267 lines
8.7 KiB
C
#include "lp5562.h"
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#include <core/common_defines.h>
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#include "lp5562_reg.h"
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#include <furi_hal.h>
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#include <stdio.h>
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void lp5562_reset(FuriHalI2cBusHandle* handle) {
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Reg0D_Reset reg = {.value = 0xFF};
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furi_hal_i2c_write_reg_8(handle, LP5562_ADDRESS, 0x0D, *(uint8_t*)®, LP5562_I2C_TIMEOUT);
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}
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void lp5562_configure(FuriHalI2cBusHandle* handle) {
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Reg08_Config config = {.INT_CLK_EN = true, .PS_EN = true, .PWM_HF = true};
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furi_hal_i2c_write_reg_8(handle, LP5562_ADDRESS, 0x08, *(uint8_t*)&config, LP5562_I2C_TIMEOUT);
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Reg70_LedMap map = {
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.red = EngSelectI2C,
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.green = EngSelectI2C,
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.blue = EngSelectI2C,
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.white = EngSelectI2C,
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};
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furi_hal_i2c_write_reg_8(handle, LP5562_ADDRESS, 0x70, *(uint8_t*)&map, LP5562_I2C_TIMEOUT);
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}
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void lp5562_enable(FuriHalI2cBusHandle* handle) {
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Reg00_Enable reg = {.CHIP_EN = true, .LOG_EN = true};
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furi_hal_i2c_write_reg_8(handle, LP5562_ADDRESS, 0x00, *(uint8_t*)®, LP5562_I2C_TIMEOUT);
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//>488μs delay is required after writing to 0x00 register, otherwise program engine will not work
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furi_delay_us(500);
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}
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void lp5562_set_channel_current(FuriHalI2cBusHandle* handle, LP5562Channel channel, uint8_t value) {
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uint8_t reg_no;
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if(channel == LP5562ChannelRed) {
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reg_no = LP5562_CHANNEL_RED_CURRENT_REGISTER;
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} else if(channel == LP5562ChannelGreen) {
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reg_no = LP5562_CHANNEL_GREEN_CURRENT_REGISTER;
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} else if(channel == LP5562ChannelBlue) {
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reg_no = LP5562_CHANNEL_BLUE_CURRENT_REGISTER;
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} else if(channel == LP5562ChannelWhite) {
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reg_no = LP5562_CHANNEL_WHITE_CURRENT_REGISTER;
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} else {
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return;
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}
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furi_hal_i2c_write_reg_8(handle, LP5562_ADDRESS, reg_no, value, LP5562_I2C_TIMEOUT);
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}
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void lp5562_set_channel_value(FuriHalI2cBusHandle* handle, LP5562Channel channel, uint8_t value) {
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uint8_t reg_no;
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if(channel == LP5562ChannelRed) {
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reg_no = LP5562_CHANNEL_RED_VALUE_REGISTER;
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} else if(channel == LP5562ChannelGreen) {
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reg_no = LP5562_CHANNEL_GREEN_VALUE_REGISTER;
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} else if(channel == LP5562ChannelBlue) {
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reg_no = LP5562_CHANNEL_BLUE_VALUE_REGISTER;
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} else if(channel == LP5562ChannelWhite) {
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reg_no = LP5562_CHANNEL_WHITE_VALUE_REGISTER;
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} else {
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return;
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}
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furi_hal_i2c_write_reg_8(handle, LP5562_ADDRESS, reg_no, value, LP5562_I2C_TIMEOUT);
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}
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uint8_t lp5562_get_channel_value(FuriHalI2cBusHandle* handle, LP5562Channel channel) {
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uint8_t reg_no;
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uint8_t value;
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if(channel == LP5562ChannelRed) {
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reg_no = LP5562_CHANNEL_RED_VALUE_REGISTER;
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} else if(channel == LP5562ChannelGreen) {
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reg_no = LP5562_CHANNEL_GREEN_VALUE_REGISTER;
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} else if(channel == LP5562ChannelBlue) {
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reg_no = LP5562_CHANNEL_BLUE_VALUE_REGISTER;
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} else if(channel == LP5562ChannelWhite) {
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reg_no = LP5562_CHANNEL_WHITE_VALUE_REGISTER;
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} else {
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return 0;
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}
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furi_hal_i2c_read_reg_8(handle, LP5562_ADDRESS, reg_no, &value, LP5562_I2C_TIMEOUT);
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return value;
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}
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void lp5562_set_channel_src(FuriHalI2cBusHandle* handle, LP5562Channel channel, LP5562Engine src) {
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uint8_t reg_val = 0;
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uint8_t bit_offset = 0;
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do {
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if(channel & LP5562ChannelRed) {
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bit_offset = 4;
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channel &= ~LP5562ChannelRed;
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} else if(channel & LP5562ChannelGreen) {
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bit_offset = 2;
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channel &= ~LP5562ChannelGreen;
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} else if(channel & LP5562ChannelBlue) {
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bit_offset = 0;
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channel &= ~LP5562ChannelBlue;
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} else if(channel & LP5562ChannelWhite) {
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bit_offset = 6;
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channel &= ~LP5562ChannelWhite;
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} else {
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return;
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}
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furi_hal_i2c_read_reg_8(handle, LP5562_ADDRESS, 0x70, ®_val, LP5562_I2C_TIMEOUT);
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reg_val &= ~(0x3 << bit_offset);
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reg_val |= ((src & 0x03) << bit_offset);
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furi_hal_i2c_write_reg_8(handle, LP5562_ADDRESS, 0x70, reg_val, LP5562_I2C_TIMEOUT);
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} while(channel != 0);
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}
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void lp5562_execute_program(
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FuriHalI2cBusHandle* handle,
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LP5562Engine eng,
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LP5562Channel ch,
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uint16_t* program) {
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if((eng < LP5562Engine1) || (eng > LP5562Engine3)) return;
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uint8_t reg_val = 0;
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uint8_t bit_offset = 0;
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uint8_t enable_reg = 0;
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// Read old value of enable register
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furi_hal_i2c_read_reg_8(handle, LP5562_ADDRESS, 0x00, &enable_reg, LP5562_I2C_TIMEOUT);
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// Engine configuration
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bit_offset = (3 - eng) * 2;
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furi_hal_i2c_read_reg_8(handle, LP5562_ADDRESS, 0x01, ®_val, LP5562_I2C_TIMEOUT);
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reg_val &= ~(0x3 << bit_offset);
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reg_val |= (0x01 << bit_offset); // load
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furi_hal_i2c_write_reg_8(handle, LP5562_ADDRESS, 0x01, reg_val, LP5562_I2C_TIMEOUT);
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furi_delay_us(100);
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// Program load
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for(uint8_t i = 0; i < 16; i++) {
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// Program words are big-endian, so reverse byte order before loading
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program[i] = __REV16(program[i]);
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}
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furi_hal_i2c_write_mem(
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handle,
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LP5562_ADDRESS,
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0x10 + (0x20 * (eng - 1)),
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(uint8_t*)program,
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16 * 2,
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LP5562_I2C_TIMEOUT);
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// Program start
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bit_offset = (3 - eng) * 2;
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furi_hal_i2c_read_reg_8(handle, LP5562_ADDRESS, 0x01, ®_val, LP5562_I2C_TIMEOUT);
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reg_val &= ~(0x3 << bit_offset);
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reg_val |= (0x02 << bit_offset); // run
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furi_hal_i2c_write_reg_8(handle, LP5562_ADDRESS, 0x01, reg_val, LP5562_I2C_TIMEOUT);
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// Switch output to Execution Engine
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lp5562_set_channel_src(handle, ch, eng);
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enable_reg &= ~(0x3 << bit_offset);
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enable_reg |= (0x02 << bit_offset); // run
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furi_hal_i2c_write_reg_8(handle, LP5562_ADDRESS, 0x00, enable_reg, LP5562_I2C_TIMEOUT);
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}
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void lp5562_stop_program(FuriHalI2cBusHandle* handle, LP5562Engine eng) {
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if((eng < LP5562Engine1) || (eng > LP5562Engine3)) return;
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uint8_t reg_val = 0;
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uint8_t bit_offset = 0;
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// Engine configuration
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bit_offset = (3 - eng) * 2;
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furi_hal_i2c_read_reg_8(handle, LP5562_ADDRESS, 0x01, ®_val, LP5562_I2C_TIMEOUT);
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reg_val &= ~(0x3 << bit_offset);
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// Not setting lowest 2 bits here
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furi_hal_i2c_write_reg_8(handle, LP5562_ADDRESS, 0x01, reg_val, LP5562_I2C_TIMEOUT);
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}
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void lp5562_execute_ramp(
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FuriHalI2cBusHandle* handle,
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LP5562Engine eng,
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LP5562Channel ch,
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uint8_t val_start,
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uint8_t val_end,
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uint16_t time) {
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if(val_start == val_end) return;
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// Temporary switch to constant value from register
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lp5562_set_channel_src(handle, ch, LP5562Direct);
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// Prepare command sequence
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uint16_t program[16];
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uint8_t diff = (val_end > val_start) ? (val_end - val_start) : (val_start - val_end);
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uint16_t time_step = time * 2 / diff;
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uint8_t prescaller = 0;
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if(time_step > 0x3F) {
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time_step /= 32;
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prescaller = 1;
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}
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if(time_step == 0) {
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time_step = 1;
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} else if(time_step > 0x3F)
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time_step = 0x3F;
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program[0] = 0x4000 | val_start; // Set PWM
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if(val_end > val_start) {
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program[1] = (prescaller << 14) | (time_step << 8) | ((diff / 2) & 0x7F); // Ramp Up
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} else {
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program[1] = (prescaller << 14) | (time_step << 8) | 0x80 |
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((diff / 2) & 0x7F); // Ramp Down
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}
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program[2] = 0xA001 | ((2 - 1) << 7); // Loop to step 1, repeat twice to get full 8-bit scale
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program[3] = 0xC000; // End
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// Execute program
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lp5562_execute_program(handle, eng, LP5562ChannelWhite, program);
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// Write end value to register
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lp5562_set_channel_value(handle, ch, val_end);
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}
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void lp5562_execute_blink(
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FuriHalI2cBusHandle* handle,
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LP5562Engine eng,
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LP5562Channel ch,
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uint16_t on_time,
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uint16_t period,
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uint8_t brightness) {
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// Temporary switch to constant value from register
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lp5562_set_channel_src(handle, ch, LP5562Direct);
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// Prepare command sequence
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uint16_t program[16];
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uint16_t time_step = 0;
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uint8_t prescaller = 0;
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program[0] = 0x4000 | brightness; // Set PWM
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time_step = on_time * 2;
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if(time_step > 0x3F) {
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time_step /= 32;
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prescaller = 1;
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} else {
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prescaller = 0;
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}
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if(time_step == 0) {
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time_step = 1;
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} else if(time_step > 0x3F)
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time_step = 0x3F;
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program[1] = (prescaller << 14) | (time_step << 8); // Delay
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program[2] = 0x4000 | 0; // Set PWM
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time_step = (period - on_time) * 2;
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if(time_step > 0x3F) {
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time_step /= 32;
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prescaller = 1;
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} else {
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prescaller = 0;
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}
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if(time_step == 0) {
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time_step = 1;
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} else if(time_step > 0x3F)
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time_step = 0x3F;
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program[3] = (prescaller << 14) | (time_step << 8); // Delay
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program[4] = 0x0000; // Go to start
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// Execute program
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lp5562_execute_program(handle, eng, ch, program);
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}
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