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84 Serial I/O Models
// i2c I/O object with the stop condition specified
return
-
value
= io_in(
io
-
object
-
name
,
data
-
buffer
,
dev
-
address
,
count
,
stop
);
return
-
value
= io_out(
io
-
object
-
name
,
data
-
buffer
,
dev
-
address
,
count
,
stop
);
Example
#define AD_ADDR 0x48 // address of the A/D converter
IO_8 i2c ioI2C;
unsigned int buffer[5];
unsigned int control;
boolean result;
. . .
when (...) {
// Read the A/D converter.
// First, write a control word byte.
control = 0x04;
result = io_out(ioI2C, &control, AD_ADDR, 1);
// Next, perform a 5-byte read of the A/D converter.
result = io_in(ioI2C, buffer, AD_ADDR, 5);
}
Magcard Bitstream Input
The magcard_bitstream I/O model provides the ability to read un-processed serial
data streams from most magnetic stripe card readers in real time. This model
can be used to read magnetic card data in either direction, forward or reverse,
because the data does not need to follow any specific format.
This I/O model can read up to 65 535 bits of data, stored in 8192 bytes of data,
from a magnetic stripe card reader.
This model applies to 3120 Power Line Smart Transceivers, 3150 Power Line
Smart Transceivers, 3170 Power Line Smart Transceivers, and Series 5000
Neuron Processors and Smart Transceivers.
Hardware Considerations
Figure 30 shows the magcard bitstream input.
Serial Data
Clock
IO10
IO9
IO8
IO0
IO1
IO2
IO3
IO4
IO5
IO6
IO7
Timeout
IO11
Figure 30. Magcard Bitstream Input
- I/O Model Reference for Smart 1
- Transceivers and Neuron Chips 1
- Welcome 3
- Audience 3
- Related Documentation 3
- Mini FX User’s Guide 4
- Series 5000 Chip Data Book 4
- Table of Contents 5
- Introduction 11
- Overview 12
- Direct I/O Models 14
- Parallel I/O Models 14
- Serial I/O Models 15
- Overlaying I/O Objects 18
- I/O Timing Issues 22
- Information 24
- Multiplexing I/O Models 28
- General I/O Functions 28
- Neuron C Reference Guide 29
- I/O Events 31
- Neuron C Programmer’s Guide 31
- Using Functions or Events 35
- Timer/Counter I/O Models 38
- Output Models 39
- Bit Input/Output 42
- Bit Input Example 45
- Bit Output Example 45
- Byte Input/Output 45
- Byte Input Example 47
- Byte Output Example 48
- Leveldetect Input 48
- Nibble Input/Output 50
- Nibble Input Example 53
- Nibble Output Example 53
- Touch Input/Output 53
- Muxbus Input/Output 62
- Parallel Input/Output 65
- Master Program 71
- Slave Program 72
- Slave B Mode 73
- Token Passing 76
- Handshaking 76
- Transferring Data 76
- Resynchronization Procedure 77
- Using the IRQ Signal 80
- Bitshift Input/Output 86
- Bitshift Input Example 90
- Bitshift Output Example 90
- I2C Input/Output 90
- Magcard Bitstream Input 94
- Magcard Input 96
- Magtrack1 Input 99
- Programming Considerations 100
- Syntax 101
- Example 102
- Neurowire Input/Output 102
- Hardware Considerations 102
- Neurowire Master Mode 103
- Neurowire Slave Mode 104
- SCI (UART) Input/Output 108
- Serial Input/Output 113
- Serial Input Example 117
- Serial Output Example 117
- SPI Input/Output 117
- SPI Master 122
- SPI Master (Neurowire 122
- SPI Slave 123
- Wiegand Input 128
- Timer/Counter Input Models 133
- Dualslope Input 135
- Neuron C Resources 138
- Edgelog Input 139
- Infrared Input 144
- Ontime Input 148
- Period Input 151
- Pulsecount Input 155
- Quadrature Input 158
- Totalcount Input 161
- Timer/Counter Output Models 165
- Edgedivide Output 166
- Frequency Output 169
- Infrared Pattern Output 172
- Oneshot Output 175
- Pulsecount Output 178
- Pulsewidth Output 181
- Stretched Triac Output 184
- Triac Output 189
- Example 1 192
- Example 2 193
- Triggered Count Output 193
- Timer/Counter Periods and 197
- Resolution 197
- InputClock 199
- And so on 200
- Period = 201
- Frequency = 1 / 201
- 196 Index 206
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