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Component: I2C Free (Peripheral CAL): Difference between revisions

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Example showing how to build a component using a CAL component [[Using_CAL_Components|Using CAL Components]].
Example showing how to build a component using a CAL component [[Using_CAL_Components|Using CAL Components]].




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==Macro reference==
==Macro reference==


{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
===GetConsoleHandle===
{| class="mtx-class-macrotable wikitable"
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Slave_Uninit'''
| width="90%" class="mtx-class-macrohead" | '''GetConsoleHandle'''
|-
|-
| colspan="2" | Uninitialise the Slave 
| colspan="2" | Obtains the CAL console handle 
|-
|-
|-
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-h32-icon.png]] - HANDLE
| width="90%" style="border-top: 2px solid #000;" | ''Return''
| width="90%" style="border-top: 2px solid #000;" | ''Return''
|}
|}




{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
===GetList===
{| class="mtx-class-macrotable wikitable"
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''GetValue'''
| width="90%" class="mtx-class-macrohead" | '''GetList'''
|-
|-
| colspan="2" | Get the Named property value.   
| colspan="2" | returns Named property List as filter string  
|-
|-
|-
|-
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{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
===GetValue===
{| class="mtx-class-macrotable wikitable"
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Master_Stop'''
| width="90%" class="mtx-class-macrohead" | '''GetValue'''
|-
|-
| colspan="2" | Output a Master Stop 
| colspan="2" | Get the Named property value.   
|-
|-
| width="10%" align="center" | [[File:Fc9-string-icon.png]] - STRING
| width="90%" | Name
|-
|-
| colspan="2" |  
|-
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-string-icon.png]] - STRING
| width="90%" style="border-top: 2px solid #000;" | ''Return''
| width="90%" style="border-top: 2px solid #000;" | ''Return''
|}
|}




{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
===Master_Init===
{| class="mtx-class-macrotable wikitable"
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Slave_Init'''
| width="90%" class="mtx-class-macrohead" | '''Master_Init'''
|-
|-
| colspan="2" | Initialise the Slave with the given Address, or range of Addresses. Only address bits that have a corresponding bit set in the Mask will be compared with the incoming bus address. 
| colspan="2" | Initialise the Master 
|-
|-
|-
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="90%" | Address
| width="90%" style="border-top: 2px solid #000;" | ''Return''
|}
 
 
===Master_Restart===
{| class="mtx-class-macrotable wikitable"
|-
|-
| colspan="2" | 7 Bit Address of this device (Bit 0 is ignored) 
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
| width="90%" class="mtx-class-macrohead" | '''Master_Restart'''
|-
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| colspan="2" | Output a Master Restart sequence 
| width="90%" | Mask
|-
|-
| colspan="2" | Bit mask used to compare addresses 
|-
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
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{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
===Master_RxByte===
{| class="mtx-class-macrotable wikitable"
|-
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
| width="90%" class="mtx-class-macrohead" | '''Master_RxByte'''
|-
| colspan="2" | Returns a received data byte. Set Last=0 if there is following more Master_RxByte macros Set Last=1 if this is the last Master_RxByte and it is followed with Master_Stop. If Last = 1 the I2C bus will be presented with a 'Nack' condition. 
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Master_Uninit'''
|-
|-
| colspan="2" | Uninitialise the Master 
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | Last
|-
|-
| colspan="2" | Range: 0-1 - 0 = Not the last byte to receive, 1 = last byte to receive 
|-
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" style="border-top: 2px solid #000;" | ''Return''
| width="90%" style="border-top: 2px solid #000;" | ''Return''
|}
|}




{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
===Master_Start===
{| class="mtx-class-macrotable wikitable"
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Slave_Status'''
| width="90%" class="mtx-class-macrohead" | '''Master_Start'''
|-
|-
| colspan="2" | Returns the Slave Status. Bit 0 = 1 Indicates address/data byte available in the buffer to read Bit 5 = 1 Indicates that the last byte received or transmitted was data (else address)  
| colspan="2" | Output a Master Start sequence 
|-
|-
|-
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-u8-icon.png]] - BYTE
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="90%" style="border-top: 2px solid #000;" | ''Return''
| width="90%" style="border-top: 2px solid #000;" | ''Return''
|}
|}




{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
===Master_Stop===
{| class="mtx-class-macrotable wikitable"
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''GetConsoleHandle'''
| width="90%" class="mtx-class-macrohead" | '''Master_Stop'''
|-
|-
| colspan="2" | Obtains the CAL console handle 
| colspan="2" | Output a Master Stop 
|-
|-
|-
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-h32-icon.png]] - HANDLE
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="90%" style="border-top: 2px solid #000;" | ''Return''
| width="90%" style="border-top: 2px solid #000;" | ''Return''
|}
|}




{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
===Master_TxByte===
{| class="mtx-class-macrotable wikitable"
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Slave_TxByte'''
| width="90%" class="mtx-class-macrohead" | '''Master_TxByte'''
|-
|-
| colspan="2" | Send a data byte, returns Ack/Nak from Master 0=Ack=More, 1=Nak=Last 
| colspan="2" | Send a data byte 
|-
|-
|-
|-
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{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
===Master_Uninit===
{| class="mtx-class-macrotable wikitable"
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Slave_RxByte'''
| width="90%" class="mtx-class-macrohead" | '''Master_Uninit'''
|-
|-
| colspan="2" | Returns the data received, and sends either Ack or Nak Set parameter Last as: 1=Last=Nak, 0=Ack=More 
| colspan="2" | Uninitialise the Master 
|-
|-
|-
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="90%" | Last
|-
| colspan="2" | Sends Ack if 0, else Nak 
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" style="border-top: 2px solid #000;" | ''Return''
| width="90%" style="border-top: 2px solid #000;" | ''Return''
|}
|}




{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
===SetValue===
{| class="mtx-class-macrotable wikitable"
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''SetValue'''
| width="90%" class="mtx-class-macrohead" | '''SetValue'''
|-
|-
| colspan="2" | Change Named property to new Value.  If "CHANNEL" the ports will be also updated from the fcd  
| colspan="2" | Change Named property to new Value.  If "CHANNEL" the ports will be also updated from the fcd  
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{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
===Slave_Init===
{| class="mtx-class-macrotable wikitable"
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Master_Init'''
| width="90%" class="mtx-class-macrohead" | '''Slave_Init'''
|-
|-
| colspan="2" | Initialise the Master 
| colspan="2" | Initialise the Slave with the given Address, or range of Addresses. Only address bits that have a corresponding bit set in the Mask will be compared with the incoming bus address. 
|-
|-
|-
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" style="border-top: 2px solid #000;" | ''Return''
| width="90%" | Address
|}
 
 
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
| colspan="2" | 7 Bit Address of this device (Bit 0 is ignored) 
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Master_Start'''
|-
|-
| colspan="2" | Output a Master Start sequence 
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | Mask
|-
|-
| colspan="2" | Bit mask used to compare addresses 
|-
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
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{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
===Slave_RxByte===
{| class="mtx-class-macrotable wikitable"
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Master_TxByte'''
| width="90%" class="mtx-class-macrohead" | '''Slave_RxByte'''
|-
|-
| colspan="2" | Send a data byte 
| colspan="2" | Returns the data received, and sends either Ack or Nak Set parameter Last as: 1=Last=Nak, 0=Ack=More 
|-
|-
|-
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | Data
| width="90%" | Last
|-
|-
| colspan="2" |  
| colspan="2" | Sends Ack if 0, else Nak 
|-
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-u8-icon.png]] - BYTE
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-u8-icon.png]] - BYTE
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{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
===Slave_Status===
{| class="mtx-class-macrotable wikitable"
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Master_Restart'''
| width="90%" class="mtx-class-macrohead" | '''Slave_Status'''
|-
|-
| colspan="2" | Output a Master Restart sequence 
| colspan="2" | Returns the Slave Status. Bit 0 = 1 Indicates address/data byte available in the buffer to read Bit 5 = 1 Indicates that the last byte received or transmitted was data (else address)  
|-
|-
|-
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" style="border-top: 2px solid #000;" | ''Return''
| width="90%" style="border-top: 2px solid #000;" | ''Return''
|}
|}




{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
===Slave_TxByte===
{| class="mtx-class-macrotable wikitable"
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Master_RxByte'''
| width="90%" class="mtx-class-macrohead" | '''Slave_TxByte'''
|-
|-
| colspan="2" | Returns a received data byte. Set Last=0 if there is following more Master_RxByte macros Set Last=1 if this is the last Master_RxByte and it is followed with Master_Stop. If Last = 1 the I2C bus will be presented with a 'Nack' condition. 
| colspan="2" | Send a data byte, returns Ack/Nak from Master 0=Ack=More, 1=Nak=Last 
|-
|-
|-
|-
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="10%" align="center" | [[File:Fc9-u8-icon.png]] - BYTE
| width="90%" | Last
| width="90%" | Data
|-
|-
| colspan="2" | Range: 0-1 - 0 = Not the last byte to receive, 1 = last byte to receive 
| colspan="2" |  
|-
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-u8-icon.png]] - BYTE
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-u8-icon.png]] - BYTE
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{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
===Slave_Uninit===
{| class="mtx-class-macrotable wikitable"
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-comp-macro.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''GetList'''
| width="90%" class="mtx-class-macrohead" | '''Slave_Uninit'''
|-
|-
| colspan="2" | returns Named property List as filter string  
| colspan="2" | Uninitialise the Slave 
|-
|-
|-
|-
| width="10%" align="center" | [[File:Fc9-string-icon.png]] - STRING
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-void-icon.png]] - VOID
| width="90%" | Name
|-
| colspan="2" |  
|-
| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-string-icon.png]] - STRING
| width="90%" style="border-top: 2px solid #000;" | ''Return''
| width="90%" style="border-top: 2px solid #000;" | ''Return''
|}
|}




==Property reference==
==Property reference==


{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
{| class="mtx-class-macrotable wikitable"
|-
|-
| width="10%" align="center" style="background-color:#D8C9D8;" | [[File:Fc9-prop-icon.png]]
| width="10%" align="center" class="mtx-class-macrohead" | [[File:Fc9-prop-icon.png]]
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Properties'''  
| width="90%" class="mtx-class-macrohead" | '''Properties'''  
|-
|-
|-
|-
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| colspan="2" | On older microcontroller devices there is a potential for the I2C hardware channel to lock up if there is not  a 10ms delay between an I2C stop event and the next I2C start event.  Most modern microcontrollers will not have a problem so this property can be disabled to speed up the  I2C communications.  
| colspan="2" | On older microcontroller devices there is a potential for the I2C hardware channel to lock up if there is not  a 10ms delay between an I2C stop event and the next I2C start event.  Most modern microcontrollers will not have a problem so this property can be disabled to speed up the  I2C communications.  
|-
|-
| width="10%" align="center" style="background-color:#EAE1EA;" | [[File:Fc9-conn-icon.png]]
| width="10%" align="center" class="mtx-class-propfolder" | [[File:Fc9-conn-icon.png]]
| width="90%" style="background-color:#EAE1EA; color:#4B008D;" | Simulation
| width="90%" class="mtx-class-propfolder" | Simulation
|-
|-
|-
|-

Latest revision as of 14:37, 13 July 2026

Author Matrix Ltd
Version 1.3
Category Peripheral CAL


I2C Free component

Chip Abstraction Layer for Two Wire I2C Communications

Component Source Code

Please click here to download the component source project: FC_Comp_Source_I2C_Free.fcfx

Please click here to view the component source code (Beta): FC_Comp_Source_I2C_Free.fcfx

Detailed description

No detailed description exists yet for this component

Examples

Example showing how to build a component using a CAL component Using CAL Components.







Macro reference

GetConsoleHandle

GetConsoleHandle
Obtains the CAL console handle 
- HANDLE Return


GetList

GetList
returns Named property List as filter string  
- STRING Name
 
- STRING Return


GetValue

GetValue
Get the Named property value.  
- STRING Name
 
- STRING Return


Master_Init

Master_Init
Initialise the Master 
- VOID Return


Master_Restart

Master_Restart
Output a Master Restart sequence 
- VOID Return


Master_RxByte

Master_RxByte
Returns a received data byte. Set Last=0 if there is following more Master_RxByte macros Set Last=1 if this is the last Master_RxByte and it is followed with Master_Stop. If Last = 1 the I2C bus will be presented with a 'Nack' condition. 
- BYTE Last
Range: 0-1 - 0 = Not the last byte to receive, 1 = last byte to receive 
- BYTE Return


Master_Start

Master_Start
Output a Master Start sequence 
- VOID Return


Master_Stop

Master_Stop
Output a Master Stop 
- VOID Return


Master_TxByte

Master_TxByte
Send a data byte 
- BYTE Data
 
- BYTE Return


Master_Uninit

Master_Uninit
Uninitialise the Master 
- VOID Return


SetValue

SetValue
Change Named property to new Value. If "CHANNEL" the ports will be also updated from the fcd  
- STRING Name
 
- STRING Value
port value as string 
- VOID Return


Slave_Init

Slave_Init
Initialise the Slave with the given Address, or range of Addresses. Only address bits that have a corresponding bit set in the Mask will be compared with the incoming bus address. 
- BYTE Address
7 Bit Address of this device (Bit 0 is ignored) 
- BYTE Mask
Bit mask used to compare addresses 
- VOID Return


Slave_RxByte

Slave_RxByte
Returns the data received, and sends either Ack or Nak Set parameter Last as: 1=Last=Nak, 0=Ack=More 
- BYTE Last
Sends Ack if 0, else Nak 
- BYTE Return


Slave_Status

Slave_Status
Returns the Slave Status. Bit 0 = 1 Indicates address/data byte available in the buffer to read Bit 5 = 1 Indicates that the last byte received or transmitted was data (else address)  
- BYTE Return


Slave_TxByte

Slave_TxByte
Send a data byte, returns Ack/Nak from Master 0=Ack=More, 1=Nak=Last 
- BYTE Data
 
- BYTE Return


Slave_Uninit

Slave_Uninit
Uninitialise the Slave 
- VOID Return


Property reference

Properties
Channel
Channel selection 
SDA
Pin used for SDA (data signal) 
SCL
Pin used for SCL (clock signal) 
Baud Select
Baud rate option selector 
Baud Rate
Baud rate to be used 
Slew Rate Control
Slew Rate Control Enabled or Disabled 
SMBus Inputs
When Enabled input logic thresholds are compliant with SMBus specification 
Stop Delay
On older microcontroller devices there is a potential for the I2C hardware channel to lock up if there is not a 10ms delay between an I2C stop event and the next I2C start event. Most modern microcontrollers will not have a problem so this property can be disabled to speed up the I2C communications.  
Simulation
Scope Traces
Selects if the scope traces are automatically generated or not 
Console Data
Selects if the console data is automatically generated or not 
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