OM6277,598 NXP Semiconductors, OM6277,598 Datasheet - Page 35

• Manufacturer Part Number: OM6277,598
• Description: DEMO BOARD FOR PCA9564
• Manufacturer: NXP Semiconductors

Specifications of OM6277,598

• Main Purpose: Interface, I2C Controller
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: PCA9564
• Primary Attributes: I2C Bus Controller, 1 8-Bit GPIO, 1 8-Bit LED Dimmer
• Secondary Attributes: 8 Momentary Switches, 23 LEDs
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Other names: 568-4001; 935283226598

//****************************************************************************
// Program 4:P89LV51 <--> PCA9564 <--> P89LPC932
// Initiates an automatic I2C slave address search in order
// to find P89LPC932's I2C slave address
//****************************************************************************
void I2C_Address_Search(void)
{
}
void Init_LPC932(void)
{
}
bdata BYTE I2C_Address;
LED2 = 1;
LED3 = 1;
while (Buffer3[0]!=0x7F)
{
}
Message4.nrBytes = 2;
Buffer4[0] = 0x00;
I2C_Write(&Message4);
LPC932_WR = Search_Routine(0xDE,0xEE);
LPC932_RD = LPC932_WR + 1;
Message4.address = LPC932_WR;
Message4.buf
Message4.nrBytes = 2;
Buffer4[0] = 0x00;
Buffer4[1] = 0xFF;
I2C_Write(&Message4);
Buffer4[1] = 0xFF;
GPIO_Interrupt_Handler();
if (Buffer3[0]!=0xFF)
{
}
switch (Buffer3[0])
{
}
case 0x7F : break;
case 0xFE : I2C_Address = Search_Routine(0x00,0xFE);
case 0xFD : Search_Successful = 0;
= Buffer4;
if (Search_Successful == 0)
{
}
Buffer3[0] = 0xFF;
if (Search_Successful == 1)
{
}
break;
LED2 = 1;
LED3 = 1;
Message4.address = LPC932_WR;
Message4.buf
Message4.nrBytes = 2;
Buffer4[0] = 0x00;
Buffer4[1] = 0xFF;
I2C_Write(&Message4);
Message4.nrBytes = 1;
Buffer4[0] = 0xEE;
I2C_Write(&Message4);
Buffer3[0] = 0xFF;
break;
LED2 = 1;
LED3 = 0;
LED2 = 0;
LED3 = 1;
LPC932_WR = I2C_Address;
LPC932_RD = LPC932_WR + 1;
Message4.address = LPC932_WR;
Message4.buf
Message4.nrBytes = 2;
Buffer4[0] = 0x00;
Buffer4[1] = ~LPC932_WR;
I2C_Write(&Message4);
// Command byte to program LEDs
// LPC932 all LEDs off
// LD[13:20] off
// Command to program
// LPC932 all LEDs off when leaving Program 3
= Buffer4;
= Buffer4;
// Reset of the previous search, LPC932 scans and stores its I2C address
// LD11 is
// LD12 is
// Main loop as long as S8 (exit Program) has not been pushed
// Check if an action on pushbutton happened
// execute the command associated with the action on pushbutton
// Exit Program 3 - S8 pushed
// Search failed (the all I2C address range has been checked
// Search successful
// Command byte to program the LEDs
// LD[13:20] display the found address
// Program LPC932 (2 bytes)
// Command byte to program the LEDs
// LD[13:20] off
// Program LPC932 (2 bytes)
// Command byte to scan and store the new I2C address
// Program LPC932 (1 byte)
LEDs
35
off
off