138 lines
3.4 KiB
C
138 lines
3.4 KiB
C
#include "husb238.h"
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#include <inttypes.h>
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#include "portmacro.h"
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#include "esp_log.h"
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static uint8_t husb_registers[10];
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void init_i2c()
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{
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int i2c_master_port = 0;
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i2c_config_t conf = {
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.mode = I2C_MODE_MASTER,
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.sda_io_num = 12, // select GPIO specific to your project
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.sda_pullup_en = GPIO_PULLUP_ENABLE,
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.scl_io_num = 14, // select GPIO specific to your project
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.scl_pullup_en = GPIO_PULLUP_ENABLE,
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.master.clk_speed = 400000, // select frequency specific to your project
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// .clk_flags = 0, /*!< Optional, you can use I2C_SCLK_SRC_FLAG_* flags to choose i2c source clock here. */
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};
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ESP_ERROR_CHECK(i2c_param_config(i2c_master_port, &conf));
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ESP_ERROR_CHECK(i2c_driver_install(i2c_master_port, I2C_MODE_MASTER, 0, 0, 0));
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}
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void husb238_init(int i2c_master_port)
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{
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unsigned char addressToRead = 0;
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i2c_master_write_read_device(i2c_master_port, HUSB238_I2CADDR_DEFAULT, &addressToRead, 1, husb_registers, 10, 100);
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for(int i = 0; i<10;i++)
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{
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ESP_LOGE(HUSB238TAG,"address %d-0x%02x",i,husb_registers[i]);
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}
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}
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void husb238_requestVoltage(int i2c_master_port,HUSB238_PDSelection voltage)
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{
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uint8_t bytesToWrite[2] = {HUSB238_SRC_PDO,(voltage<<4)&0xf0};
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i2c_master_write_to_device(i2c_master_port,HUSB238_I2CADDR_DEFAULT,bytesToWrite,2,100/portTICK_PERIOD_MS);
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bytesToWrite[0] = HUSB238_GO_COMMAND;
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bytesToWrite[1] = 0x01;
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i2c_master_write_to_device(i2c_master_port,HUSB238_I2CADDR_DEFAULT,bytesToWrite,2,100/portTICK_PERIOD_MS);
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husb238_init(i2c_master_port);
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}
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float husb238_getMaxCurrent(int i2c_master_port,HUSB238_PDSelection voltage)
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{
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husb238_init(i2c_master_port);
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uint8_t currentOption;
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switch (voltage)
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{
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case PD_SRC_5V:
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currentOption = husb_registers[2];
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break;
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case PD_SRC_9V:
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currentOption = husb_registers[3];
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break;
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case PD_SRC_12V:
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currentOption = husb_registers[4];
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break;
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case PD_SRC_15V:
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currentOption = husb_registers[5];
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break;
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case PD_SRC_18V:
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currentOption = husb_registers[6];
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break;
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case PD_SRC_20V:
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currentOption = husb_registers[7];
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break;
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default:
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return -1.0;
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break;
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}
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if(!(currentOption &0x80))
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return -1.0;
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switch (currentOption)
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{
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case CURRENT_0_5_A:
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return 0.5;
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break;
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case CURRENT_0_7_A:
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return 0.7;
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break;
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case CURRENT_1_0_A:
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return 1.0;
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break;
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case CURRENT_1_25_A:
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return 1.25;
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break;
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case CURRENT_1_5_A:
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return 1.5;
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break;
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case CURRENT_1_75_A:
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return 1.75;
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break;
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case CURRENT_2_0_A:
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return 2.0;
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break;
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case CURRENT_2_25_A:
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return 2.25;
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break;
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case CURRENT_2_50_A:
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return 2.5;
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break;
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case CURRENT_2_75_A:
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return 2.75;
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break;
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case CURRENT_3_0_A:
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return 3.0;
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break;
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case CURRENT_3_25_A:
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return 3.25;
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break;
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case CURRENT_3_5_A:
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return 3.5;
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break;
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case CURRENT_4_0_A:
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return 4.0;
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break;
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case CURRENT_4_5_A:
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return 4.5;
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break;
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case CURRENT_5_0_A:
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return 5.0;
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break;
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default:
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break;
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}
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return -1.0;
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} |