From d7ac8f546afb75bd2d626b5cc639939337560cf6 Mon Sep 17 00:00:00 2001 From: meyma Date: Thu, 22 Feb 2007 14:08:01 +0000 Subject: We have a SRF10, not SRF05 --- source/Concept/Framework/atmega128io.c | 172 +++++++++++++++++++- source/Concept/Framework/atmega128io.h | 95 ++++++++++- .../Framework/modules/input/distance_sensor.c | 176 ++++++++++++++++----- .../Framework/modules/input/distance_sensor.h | 102 +++++++----- 4 files changed, 470 insertions(+), 75 deletions(-) (limited to 'source') diff --git a/source/Concept/Framework/atmega128io.c b/source/Concept/Framework/atmega128io.c index b1d6f4d..94e0f94 100755 --- a/source/Concept/Framework/atmega128io.c +++ b/source/Concept/Framework/atmega128io.c @@ -580,6 +580,174 @@ void uart1_puts_p(const char *progmem_s ) uart1_putc(c); }/* uart1_puts_p */ - - + +///////////////////////////////////////////////////////////////////// +///////////////////////////////////////////////////////////////////// +///////////////////////////////////////////////////////////////////// +///////////////////////////////////////////////////////////////////// +// TWI-Driver + + +/*! + * TWI Bus initialsieren + * @return Resultat der Aktion + */ + +int8 Init_TWI(void){ + TWAR = OWN_ADR; /*!< Eigenen Slave Adresse setzen */ + TWBR = 12; /*!< Setze Baudrate auf 100 KHz */ + /*!< 4 MHz xtal */ + TWCR = (1< error und Rueckgabe TWSR. */ + return SUCCESS; /*!< wenn OK Rueckgabe SUCCESS */ +} + +/*! + * Sende Stop Sequence + */ + +void Send_stop(void){ + TWCR = ((1<16) { gain=16; } + + uint8 temp[2]; + uint8 state; + tx_type tx_frame[2]; + + state = SUCCESS; + + tx_frame[0].slave_adr = this->slaveAddr+W; + tx_frame[0].size = 2; + tx_frame[0].data_ptr = temp; + tx_frame[0].data_ptr[0] = 1; + tx_frame[0].data_ptr[1] = gain; + + tx_frame[1].slave_adr = OWN_ADR; + + state = Send_to_TWI(tx_frame); +} + +/*! + * Reichweite setzen, hat auch Einfluss auf die Messdauer + * @param millimeters Reichweite in mm + */ + +void Distance_Sensor::srf10_set_range(unsigned int millimeters){ + uint8 temp[2]; + uint8 state; + tx_type tx_frame[2]; + + state = SUCCESS; + + millimeters= (millimeters/43); + + tx_frame[0].slave_adr = this->slaveAddr+W; + tx_frame[0].size = 2; + tx_frame[0].data_ptr = temp; + tx_frame[0].data_ptr[0] = 2; + tx_frame[0].data_ptr[1] = millimeters; + + tx_frame[1].slave_adr = OWN_ADR; + + state = Send_to_TWI(tx_frame); +} + +/*! + * Messung ausloesen + * @param metric_unit 0x50 in Zoll, 0x51 in cm, 0x52 ms + * @return Resultat der Aktion + */ + +uint8 Distance_Sensor::srf10_ping(uint8 metric_unit){ + uint8 temp[2]; + uint8 state; + tx_type tx_frame[2]; + + state = SUCCESS; + + tx_frame[0].slave_adr = this->slaveAddr+W; + tx_frame[0].size = 2; + tx_frame[0].data_ptr = temp; + tx_frame[0].data_ptr[0] = SRF10_COMMAND; + tx_frame[0].data_ptr[1] = metric_unit; + + tx_frame[1].slave_adr = OWN_ADR; + + state = Send_to_TWI(tx_frame); + + return state; +} + +/*! + * Register auslesen + * @param srf10_register welches Register soll ausgelsen werden + * @return Inhalt des Registers + */ + +uint8 Distance_Sensor::srf10_read_register(uint8 srf10_register){ + uint8 temp; + uint8 value; + uint8 state; + tx_type tx_frame[3]; + + state = SUCCESS; + value = 0; + + tx_frame[0].slave_adr = this->slaveAddr+W; + tx_frame[0].size = 1; + tx_frame[0].data_ptr = &temp; + tx_frame[0].data_ptr[0] = srf10_register; + + tx_frame[1].slave_adr = this->slaveAddr+R; + tx_frame[1].size = 1; + tx_frame[1].data_ptr = &value; + + tx_frame[2].slave_adr = OWN_ADR; + + state = Send_to_TWI(tx_frame); + + return value; +} + +/*! + * Messung starten Ergebniss aufbereiten und zurueckgeben + * @return Messergebniss + */ + +uint16 Distance_Sensor::srf10_get_measure(){ + char hib; + char lob; + char state; + + state = SUCCESS; + + state = srf10_ping(SRF10_CENTIMETERS); + usleep(10); //Optimierungs Potential + lob=srf10_read_register(SRF10_LOB); + usleep(10); //Optimierungs Potential + hib=srf10_read_register(SRF1sr0_HIB); + + return (hib*256)+lob; +} //----------------------------------------------------------------------------- -float Distance_Sensor::GetDistance() +uint16 Distance_Sensor::GetDistance() { - uint32 result = 0; - - //(parent->GetModule(IO_DISPLAY_MAIN))->Print("Gen Pulse; Pin:",1,4); - //(parent->GetModule(IO_DISPLAY_MAIN))->Print((int)(*hardwarePin & pin)); - - msleep(500); - - //Generate pulse - *hardwareDDR |= pin;//Set pin output - *hardwarePort |= pin;//Activate port - usleep(10);//Wait for 10µs - *hardwareDDR &= ~pin;//Set pin input - *hardwarePort &= ~pin;//Deactivate port - - //(parent->GetModule(IO_DISPLAY_MAIN))->Print("Wait response; Pin:",1,4); - //(parent->GetModule(IO_DISPLAY_MAIN))->Print((int)(*hardwarePin & pin)); - - uint16 i; - //Wait for response - for(i = 0; (!(*hardwarePin & pin)) && (i < 1000); i++) { asm volatile("nop"); } - - //Calculate duration of response - while((*hardwarePin & pin)&&(result < 300000)) - { - result++; - asm volatile("nop"); - asm volatile("nop"); - asm volatile("nop"); - asm volatile("nop"); - asm volatile("nop"); - asm volatile("nop"); - asm volatile("nop"); - } - - return (float(result) * DISTANCE_PER_VALUE); + return srf10_get_measure(); } diff --git a/source/Concept/Framework/modules/input/distance_sensor.h b/source/Concept/Framework/modules/input/distance_sensor.h index 8e6aa21..9efa021 100755 --- a/source/Concept/Framework/modules/input/distance_sensor.h +++ b/source/Concept/Framework/modules/input/distance_sensor.h @@ -2,7 +2,21 @@ #define _DISTANCE_SENSOR_H #include "../../stdafx.h" -#include "sensor.h" +#include "sensor.h" + +#define SRF10_MIN_GAIN 0 /*!< setze Verstaerung auf 40 */ +#define SRF10_MAX_GAIN 16 /*!< setze Verstaerung auf 700 */ +#define SRF10_MIN_RANGE 0 /*!< Minimale Reichweite 43mm */ +#define SRF10_MAX_RANGE 5977 /*!< Maximale Reichweite 5977mm */ + +#define SRF10_INCHES 0X50 /*!< Messung in INCHES */ +#define SRF10_CENTIMETERS 0X51 /*!< Messung in CM */ +#define SRF10_MICROSECONDS 0X52 /*!< Messung in Millisekunden */ + +#define SRF10_COMMAND 0 /*!< W=Befehls-Register R=Firmware*/ +#define SRF10_LIGHT 1 /*!< W=Verstaerkungsfaktor R=Nicht benutzt */ +#define SRF10_HIB 2 /*!< W=Reichweite R=Messung High-Byte */ +#define SRF10_LOB 3 /*!< W=Nicht benutzt R=Messung Low-Byte */ class Distance_Sensor : public Sensor { @@ -10,11 +24,8 @@ public: Distance_Sensor() { this->parent = NULL; - this->moduleId = 0; - this->hardwarePort = NULL; - this->hardwareDDR = NULL; - this->hardwarePin = NULL; - this->pin = 0; + this->moduleId = 0; + this->slaveAddr = 0; // Set the I2C Slave-Adress } Distance_Sensor(uint32 sensorId) @@ -24,45 +35,64 @@ public: switch(sensorId) { - case IO_SENSOR_DISTANCE_0_DEG: - this->hardwarePort = &PORTC; - this->hardwareDDR = &DDRC; - this->hardwarePin = &PINC; - this->pin = (1 << 0); + case IO_SENSOR_DISTANCE_0_DEG: + this->slaveAddr = 0xE0; // Set the I2C Slave-Adress break; - case IO_SENSOR_DISTANCE_90_DEG: - this->hardwarePort = &PORTC; - this->hardwareDDR = &DDRC; - this->hardwarePin = &PINC; - this->pin = (1 << 1); + case IO_SENSOR_DISTANCE_90_DEG: + this->slaveAddr = 0xE2; break; - case IO_SENSOR_DISTANCE_180_DEG: - this->hardwarePort = &PORTC; - this->hardwareDDR = &DDRC; - this->hardwarePin = &PINC; - this->pin = (1 << 2); + case IO_SENSOR_DISTANCE_180_DEG: + this->slaveAddr = 0xE4; break; - case IO_SENSOR_DISTANCE_270_DEG: - this->hardwarePort = &PORTC; - this->hardwareDDR = &DDRC; - this->hardwarePin = &PINC; - this->pin = (1 << 3); + case IO_SENSOR_DISTANCE_270_DEG: + this->slaveAddr = 0xE6; break; - default: - this->hardwarePort = NULL; - this->hardwareDDR = NULL; - this->hardwarePin = NULL; - this->pin = 0; + default: + this->slaveAddr = 0; break; } } protected: - //Hardware - volatile uint8* hardwarePort; - volatile uint8* hardwareDDR; - volatile uint8* hardwarePin; - uint8 pin; + //Hardware + slaveAddr; + + /*! + * SRF10 initialsieren + */ +extern void srf10_init(void); + +/*! + * Verstaerkungsfaktor setzen + * @param gain Verstaerkungsfaktor + */ +extern void srf10_set_gain(uint8 gain); + +/*! + * Reichweite setzen, hat auch Einfluss auf die Messdauer + * @param millimeters Reichweite in mm + */ +extern void srf10_set_range(uint16 millimeters); + +/*! + * Messung ausloesen + * @param metric_unit 0x50 in Zoll, 0x51 in cm, 0x52 ms + * @return Resultat der Aktion + */ +extern uint8 srf10_ping(uint8 metric_unit); + +/*! + * Register auslesen + * @param srf10_register welches Register soll ausgelsen werden + * @return Inhalt des Registers + */ +extern uint8 srf10_read_register(uint8 SRF10_register); + +/*! + * Messung starten Ergebniss aufbereiten und zurueckgeben + * @return Messergebniss + */ +extern uint16 srf10_get_measure(void); public: float GetDistance(); -- cgit v1.2.3