التعرف على الإيماءات باستخدام APDS-9960

void APDS9960_init(void) { i2c1_write(APDS9960_CONTROL, DEFAULT_PGAIN); i2c1_write(APDS9960_GPENTH, DEFAULT_GPENTH); i2c1_write(APDS9960_GEXTH, DEFAULT_GEXTH); i2c1_write(APDS9960_GCONF2, DEFAULT_GGAIN); i2c1_write(APDS9960_GPULSE, DEFAULT_PULSE_LENGTH); i2c1_write(APDS9960_PPULSE, DEFAULT_PULSE_LENGTH); } 

 #include "stm32f10x.h" #define APDS9960_I2C_ADDR 0x39 #define APDS9960_ENABLE 0x80 #define APDS9960_GSTATUS 0xAF #define APDS9960_GFLVL 0xAE //Gesture FIFO Register (0xFC – 0xFF): #define APDS9960_GFIFO_U 0xFC #define APDS9960_GFIFO_D 0xFD #define APDS9960_GFIFO_L 0xFE #define APDS9960_GFIFO_R 0xFF #define APDS9960_CONTROL 0x8F #define APDS9960_GPENTH 0xA0 #define APDS9960_GEXTH 0xA1 #define APDS9960_GCONF2 0xA3 #define APDS9960_GPULSE 0xA6 #define APDS9960_PPULSE 0x8E #define GESTURES_START 0x01 #define GESTURES_STOP 0x02 #define DEFAULT_GPENTH 40 // Threshold for entering gesture mode #define DEFAULT_GEXTH 30 // Threshold for exiting gesture mode #define DEFAULT_PGAIN 8 // Proximity Gain Control: 4X #define DEFAULT_GGAIN 0x40 // Gesture Gain Control: 4X #define DEFAULT_PULSE_LENGTH 0x89 // 16us, 10 pulses /* Bit fields */ #define APDS9960_PON 0x01 #define APDS9960_AEN 0x02 #define APDS9960_PEN 0x04 #define APDS9960_WEN 0x08 #define APSD9960_AIEN 0x10 #define APDS9960_PIEN 0x20 #define APDS9960_GEN 0x40 #define APDS9960_GVALID 0x01 int GestUpDown = 0; int GestLeftRight = 0; //----------------------------------------------------------------------- uint8_t i2c1_read(uint8_t addr); void i2c1_write(uint8_t addr, uint8_t data); void I2C1_init(void) { I2C_InitTypeDef I2C_InitStructure; GPIO_InitTypeDef GPIO_InitStructure; RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB| RCC_APB2Periph_AFIO , ENABLE); GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD; GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7; GPIO_Init(GPIOB, &GPIO_InitStructure); I2C_StructInit(&I2C_InitStructure); I2C_InitStructure.I2C_ClockSpeed = 100000; I2C_InitStructure.I2C_OwnAddress1 = 0x01; I2C_InitStructure.I2C_Ack = I2C_Ack_Enable; I2C_Init(I2C1, &I2C_InitStructure); I2C_Cmd(I2C1, ENABLE); } //----------------------------------------------------------------------- void APDS9960_init(void) { i2c1_write(APDS9960_CONTROL, DEFAULT_PGAIN); i2c1_write(APDS9960_GPENTH, DEFAULT_GPENTH); i2c1_write(APDS9960_GEXTH, DEFAULT_GEXTH); i2c1_write(APDS9960_GCONF2, DEFAULT_GGAIN); i2c1_write(APDS9960_GPULSE, DEFAULT_PULSE_LENGTH); i2c1_write(APDS9960_PPULSE, DEFAULT_PULSE_LENGTH); } //----------------------------------------------------------------------- uint8_t i2c1_read(uint8_t addr) { uint8_t data; while(I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY)); I2C_GenerateSTART(I2C1, ENABLE); while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT)); I2C_Send7bitAddress(I2C1, APDS9960_I2C_ADDR<<1, I2C_Direction_Transmitter); while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED)); I2C_SendData(I2C1, addr); while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED)); I2C_GenerateSTART(I2C1, ENABLE); while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT)); I2C_Send7bitAddress(I2C1, APDS9960_I2C_ADDR<<1, I2C_Direction_Receiver); while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_BYTE_RECEIVED)); data = I2C_ReceiveData(I2C1); while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_RECEIVED)); I2C_AcknowledgeConfig(I2C1, DISABLE); I2C_GenerateSTOP(I2C1, ENABLE); while(I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY)); return data; } //----------------------------------------------------------------------- void i2c1_write(uint8_t addr, uint8_t data) { I2C_GenerateSTART(I2C1, ENABLE); while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT)); I2C_Send7bitAddress(I2C1, APDS9960_I2C_ADDR<<1, I2C_Direction_Transmitter); while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED)); I2C_SendData(I2C1, addr); while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED)); I2C_SendData(I2C1, data); while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED)); I2C_GenerateSTOP(I2C1, ENABLE); while(I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY)) {}; } //----------------------------------------------------------------------- void GesturesSet(uint8_t GestSel) { switch (GestSel) { case GESTURES_START: i2c1_write(APDS9960_ENABLE, APDS9960_GEN | APDS9960_PEN | APDS9960_PON); break; case GESTURES_STOP: i2c1_write(APDS9960_ENABLE, APDS9960_PEN | APDS9960_PON); break; default: i2c1_write(APDS9960_ENABLE, APDS9960_GEN | APDS9960_PEN | APDS9960_PON); } } //----------------------------------------------------------------------- int main() { uint8_t GFLVL_buf = 0; uint8_t GSTATUS_buf = 0; uint8_t GestureUp = 0; uint8_t GestureDown = 0; uint8_t GestureLeft = 0; uint8_t GestureRight = 0; I2C1_init(); APDS9960_init(); while (1) { GFLVL_buf = 0; GSTATUS_buf = 0; GestureUp = 0; GestureDown = 0; GestureLeft = 0; GestureRight = 0; GestUpDown = 0; GestLeftRight = 0; GesturesSet(GESTURES_START); GSTATUS_buf = i2c1_read(APDS9960_GSTATUS); if(GSTATUS_buf & APDS9960_GVALID) { GFLVL_buf = i2c1_read(APDS9960_GFLVL); if(GFLVL_buf) { GestureUp = i2c1_read(APDS9960_GFIFO_U); GestureDown = i2c1_read(APDS9960_GFIFO_D); GestureLeft = i2c1_read(APDS9960_GFIFO_L); GestureRight = i2c1_read(APDS9960_GFIFO_R); //Truth table: //UP: GestUpDown(+) | GestLeftRight(+) //DOWN: GestUpDown(-) | GestLeftRight(-) //LEFT: GestUpDown(+) | GestLeftRight(-) //RIGHT: GestUpDown(-) | GestLeftRight(+) GestUpDown = GestureUp-GestureDown; GestLeftRight = GestureLeft-GestureRight; GesturesSet(GESTURES_STOP); } } } }