- Not ready for advanced support yet - Basic register and page writing support complete

9 years ago · 1acc89e2bd
--- a/Scan/ISSILed/led_scan.c
+++ b/Scan/ISSILed/led_scan.c
@@ -0,0 +1,706 @@
 /* Copyright (C) 2014-2015 by Jacob Alexander
 *
 * This file is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This file is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this file. If not, see <http://www.gnu.org/licenses/>.
 */

 // ----- Includes -----

 // Compiler Includes
 #include <Lib/ScanLib.h>

 // Project Includes
 #include <cli.h>
 #include <led.h>
 #include <print.h>

 // Local Includes
 #include "led_scan.h"



 // ----- Defines -----

 #define I2C_TxBufferLength 300
 #define I2C_RxBufferLength 8

 #define LED_BufferLength 144


 // ----- Structs -----

 typedef struct I2C_Buffer {
 uint16_t head;
 uint16_t tail;
 uint8_t sequencePos;
 uint16_t size;
 uint8_t *buffer;
 } I2C_Buffer;

 typedef struct LED_Buffer {
 uint8_t buffer[LED_BufferLength];
 } LED_Buffer;



 // ----- Function Declarations -----

 // CLI Functions
 void cliFunc_echo( char* args );
 void cliFunc_i2cRecv( char* args );
 void cliFunc_i2cSend( char* args );
 void cliFunc_ledTest( char* args );
 void cliFunc_ledZero( char* args );

 uint8_t I2C_TxBufferPop();
 void I2C_BufferPush( uint8_t byte, I2C_Buffer *buffer );
 uint16_t I2C_BufferLen( I2C_Buffer *buffer );
 uint8_t I2C_Send( uint8_t *data, uint8_t sendLen, uint8_t recvLen );



 // ----- Variables -----

 // Scan Module command dictionary
 CLIDict_Entry( i2cRecv, "Send I2C sequence of bytes and expect a reply of 1 byte on the last sequence." NL "\t\tUse |'s to split sequences with a stop." );
 CLIDict_Entry( i2cSend, "Send I2C sequence of bytes. Use |'s to split sequences with a stop." );
 CLIDict_Entry( ledTest, "Test out the led pages." );
 CLIDict_Entry( ledZero, "Zero out LED register pages (non-configuration)." );

 CLIDict_Def( ledCLIDict, "ISSI LED Module Commands" ) = {
 CLIDict_Item( i2cRecv ),
 CLIDict_Item( i2cSend ),
 CLIDict_Item( ledTest ),
 CLIDict_Item( ledZero ),
 { 0, 0, 0 } // Null entry for dictionary end
 };



 // Before sending the sequence, I2C_TxBuffer_CurLen is assigned and as each byte is sent, it is decremented
 // Once I2C_TxBuffer_CurLen reaches zero, a STOP on the I2C bus is sent
 volatile uint8_t I2C_TxBufferPtr[ I2C_TxBufferLength ];
 volatile uint8_t I2C_RxBufferPtr[ I2C_TxBufferLength ];

 volatile I2C_Buffer I2C_TxBuffer = { 0, 0, 0, I2C_TxBufferLength, (uint8_t*)I2C_TxBufferPtr };
 volatile I2C_Buffer I2C_RxBuffer = { 0, 0, 0, I2C_RxBufferLength, (uint8_t*)I2C_RxBufferPtr };

 LED_Buffer LED_pageBuffer;

 // A bit mask determining which LEDs are enabled in the ISSI chip
 // 0x00 -> 0x11
 const uint8_t LED_ledEnableMask[] = {
 0xE8, // I2C address
 0x00, // Starting register address
 0xFF, 0xFF, // C1-1 -> C1-16
 0xFF, 0xFF, // C2-1 -> C2-16
 0xFF, 0xFF, // C3-1 -> C3-16
 0xFF, 0xFF, // C4-1 -> C4-16
 0xFF, 0xFF, // C5-1 -> C5-16
 0xFF, 0xFF, // C6-1 -> C6-16
 0xFF, 0xFF, // C7-1 -> C7-16
 0xFF, 0xFF, // C8-1 -> C8-16
 0xFF, 0xFF, // C9-1 -> C9-16
 };

 // XXX Pre-fill example of buffers
 const uint8_t examplePage[] = {
 0xE8, // I2C address
 0x24, // Starting register address
 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, // C1-1 -> C1-16
 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, // C2-1 -> C2-16
 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, // C3-1 -> C3-16
 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F, // C4-1 -> C4-16
 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, // C5-1 -> C5-16
 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E, 0x5F, // C6-1 -> C6-16
 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, // C7-1 -> C7-16
 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F, // C8-1 -> C8-16
 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, // C9-1 -> C9-16
 };



 // ----- Interrupt Functions -----

 void i2c0_isr()
 {
 cli(); // Disable Interrupts

 uint8_t status = I2C0_S; // Read I2C Bus status

 // Master Mode Transmit
 if ( I2C0_C1 & I2C_C1_TX )
 {
 // Check current use of the I2C bus
 // Currently sending data
 if ( I2C_TxBuffer.sequencePos > 0 )
 {
 // Make sure slave sent an ACK
 if ( status & I2C_S_RXAK )
 {
 // NACK Detected, disable interrupt
 erro_print("I2C NAK detected...");
 I2C0_C1 = I2C_C1_IICEN;

 // Abort Tx Buffer
 I2C_TxBuffer.head = 0;
 I2C_TxBuffer.tail = 0;
 I2C_TxBuffer.sequencePos = 0;
 }
 else
 {
 // Transmit byte
 I2C0_D = I2C_TxBufferPop();
 }
 }
 // Receiving data
 else if ( I2C_RxBuffer.sequencePos > 0 )
 {
 // Master Receive, addr sent
 if ( status & I2C_S_ARBL )
 {
 // Arbitration Lost
 erro_print("Arbitration lost...");
 // TODO Abort Rx

 I2C0_C1 = I2C_C1_IICEN;
 I2C0_S = I2C_S_ARBL | I2C_S_IICIF; // Clear ARBL flag and interrupt
 }
 if ( status & I2C_S_RXAK )
 {
 // Slave Address NACK Detected, disable interrupt
 erro_print("Slave Address I2C NAK detected...");
 // TODO Abort Rx

 I2C0_C1 = I2C_C1_IICEN;
 }
 else
 {
 dbug_print("Attempting to read byte");
 I2C0_C1 = I2C_RxBuffer.sequencePos == 1
 ? I2C_C1_IICEN | I2C_C1_IICIE | I2C_C1_MST | I2C_C1_TXAK // Single byte read
 : I2C_C1_IICEN | I2C_C1_IICIE | I2C_C1_MST; // Multi-byte read
 }
 }
 else
 {
 /*
 dbug_msg("STOP - ");
 printHex( I2C_BufferLen( (I2C_Buffer*)&I2C_TxBuffer ) );
 print(NL);
 */

 // Delay around STOP to make sure it actually happens...
 delayMicroseconds( 1 );
 I2C0_C1 = I2C_C1_IICEN; // Send STOP
 delayMicroseconds( 7 );

 // If there is another sequence, start sending
 if ( I2C_BufferLen( (I2C_Buffer*)&I2C_TxBuffer ) < I2C_TxBuffer.size )
 {
 // Clear status flags
 I2C0_S = I2C_S_IICIF | I2C_S_ARBL;

 // Wait...till the master dies
 while ( I2C0_S & I2C_S_BUSY );

 // Enable I2C interrupt
 I2C0_C1 = I2C_C1_IICEN | I2C_C1_IICIE | I2C_C1_MST | I2C_C1_TX;

 // Transmit byte
 I2C0_D = I2C_TxBufferPop();
 }
 }
 }
 // Master Mode Receive
 else
 {
 // XXX Do we need to handle 2nd last byte?
 //I2C0_C1 = I2C_C1_IICEN | I2C_C1_IICIE | I2C_C1_MST | I2C_C1_TXAK; // No STOP, Rx, NAK on recv

 // Last byte
 if ( I2C_TxBuffer.sequencePos <= 1 )
 {
 // Change to Tx mode
 I2C0_C1 = I2C_C1_IICEN | I2C_C1_MST | I2C_C1_TX;

 // Grab last byte
 I2C_BufferPush( I2C0_D, (I2C_Buffer*)&I2C_RxBuffer );

 delayMicroseconds( 1 ); // Should be enough time before issuing the stop
 I2C0_C1 = I2C_C1_IICEN; // Send STOP
 }
 else
 {
 // Retrieve data
 I2C_BufferPush( I2C0_D, (I2C_Buffer*)&I2C_RxBuffer );
 }
 }

 I2C0_S = I2C_S_IICIF; // Clear interrupt

 sei(); // Re-enable Interrupts
 }



 // ----- Functions -----

 inline void I2C_setup()
 {
 // Enable I2C internal clock
 SIM_SCGC4 |= SIM_SCGC4_I2C0; // Bus 0

 // External pull-up resistor
 PORTB_PCR0 = PORT_PCR_ODE | PORT_PCR_SRE | PORT_PCR_DSE | PORT_PCR_MUX(2);
 PORTB_PCR1 = PORT_PCR_ODE | PORT_PCR_SRE | PORT_PCR_DSE | PORT_PCR_MUX(2);

 // SCL Frequency Divider
 // 400kHz -> 120 (0x85) @ 48 MHz F_BUS
 I2C0_F = 0x85;
 I2C0_FLT = 4;
 I2C0_C1 = I2C_C1_IICEN;
 I2C0_C2 = I2C_C2_HDRS; // High drive select
 //},

 // Enable I2C Interrupt
 NVIC_ENABLE_IRQ( IRQ_I2C0 );
 }

 void LED_zeroPages( uint8_t startPage, uint8_t numPages, uint8_t startReg, uint8_t endReg )
 {
 // Page Setup
 uint8_t pageSetup[] = { 0xE8, 0xFD, 0x00 };

 // Max length of a page + chip id + reg start
 uint8_t fullPage[ 0xB4 + 2 ] = { 0 }; // Max size of page
 fullPage[0] = 0xE8; // Set chip id
 fullPage[1] = startReg; // Set start reg

 // Iterate through given pages, zero'ing out the given register regions
 for ( uint8_t page = startPage; page < startPage + numPages; page++ )
 {
 // Set page
 pageSetup[2] = page;

 // Setup page
 while ( I2C_Send( pageSetup, sizeof( pageSetup ), 0 ) == 0 )
 delay(1);

 // Zero out page
 while ( I2C_Send( fullPage, endReg - startReg + 2, 0 ) == 0 )
 delay(1);
 }
 }

 void LED_sendPage( uint8_t *buffer, uint8_t len, uint8_t page )
 {
 // Page Setup
 uint8_t pageSetup[] = { 0xE8, 0xFD, page };

 // Setup page
 while ( I2C_Send( pageSetup, sizeof( pageSetup ), 0 ) == 0 )
 delay(1);

 // Write page to I2C Tx Buffer
 while ( I2C_Send( buffer, len, 0 ) == 0 )
 delay(1);

 }

 void LED_writeReg( uint8_t reg, uint8_t val, uint8_t page )
 {
 // Page Setup
 uint8_t pageSetup[] = { 0xE8, 0xFD, page };

 // Reg Write Setup
 uint8_t writeData[] = { 0xE8, reg, val };

 // Setup page
 while ( I2C_Send( pageSetup, sizeof( pageSetup ), 0 ) == 0 )
 delay(1);

 while ( I2C_Send( writeData, sizeof( writeData ), 0 ) == 0 )
 delay(1);
 }

 // Setup
 inline void LED_setup()
 {
 // Register Scan CLI dictionary
 CLI_registerDictionary( ledCLIDict, ledCLIDictName );

 // Initialize I2C
 I2C_setup();

 // Zero out Frame Registers
 // This needs to be done before disabling the hardware shutdown (or the leds will do undefined things)
 LED_zeroPages( 0x0B, 1, 0x00, 0x0C ); // Control Registers

 // Disable Hardware shutdown of ISSI chip (pull high)
 GPIOD_PDDR |= (1<<1);
 PORTD_PCR1 = PORT_PCR_SRE | PORT_PCR_DSE | PORT_PCR_MUX(1);
 GPIOD_PSOR |= (1<<1);

 // Clear LED Pages
 LED_zeroPages( 0x00, 8, 0x00, 0xB4 ); // LED Registers

 // Enable LEDs based upon mask
 LED_sendPage( (uint8_t*)LED_ledEnableMask, sizeof( LED_ledEnableMask ), 0 );

 // Disable Software shutdown of ISSI chip
 LED_writeReg( 0x0A, 0x01, 0x0B );
 }


 inline uint8_t I2C_BufferCopy( uint8_t *data, uint8_t sendLen, uint8_t recvLen, I2C_Buffer *buffer )
 {
 uint8_t reTurn = 0;

 // If sendLen is greater than buffer fail right away
 if ( sendLen > buffer->size )
 return 0;

 // Calculate new tail to determine if buffer has enough space
 // The first element specifies the expected number of bytes from the slave (+1)
 // The second element in the new buffer is the length of the buffer sequence (+1)
 uint16_t newTail = buffer->tail + sendLen + 2;
 if ( newTail >= buffer->size )
 newTail -= buffer->size;

 if ( I2C_BufferLen( buffer ) < sendLen + 2 )
 return 0;

 /*
 print("|");
 printHex( sendLen + 2 );
 print("|");
 printHex( *tail );
 print("@");
 printHex( newTail );
 print("@");
 */

 // If buffer is clean, return 1, otherwise 2
 reTurn = buffer->head == buffer->tail ? 1 : 2;

 // Add to buffer, already know there is enough room (simplifies adding logic)
 uint8_t bufferHeaderPos = 0;
 for ( uint16_t c = 0; c < sendLen; c++ )
 {
 // Add data to buffer
 switch ( bufferHeaderPos )
 {
 case 0:
 buffer->buffer[ buffer->tail ] = recvLen;
 bufferHeaderPos++;
 c--;
 break;

 case 1:
 buffer->buffer[ buffer->tail ] = sendLen;
 bufferHeaderPos++;
 c--;
 break;

 default:
 buffer->buffer[ buffer->tail ] = data[ c ];
 break;
 }

 // Check for wrap-around case
 if ( buffer->tail + 1 >= buffer->size )
 {
 buffer->tail = 0;
 }
 // Normal case
 else
 {
 buffer->tail++;
 }
 }

 return reTurn;
 }


 inline uint16_t I2C_BufferLen( I2C_Buffer *buffer )
 {
 // Tail >= Head
 if ( buffer->tail >= buffer->head )
 return buffer->head + buffer->size - buffer->tail;

 // Head > Tail
 return buffer->head - buffer->tail;
 }


 void I2C_BufferPush( uint8_t byte, I2C_Buffer *buffer )
 {
 // Make sure buffer isn't full
 if ( buffer->tail + 1 == buffer->head || ( buffer->head > buffer->tail && buffer->tail + 1 - buffer->size == buffer->head ) )
 {
 warn_msg("I2C_BufferPush failed, buffer full: ");
 printHex( byte );
 print( NL );
 return;
 }

 // Check for wrap-around case
 if ( buffer->tail + 1 >= buffer->size )
 {
 buffer->tail = 0;
 }
 // Normal case
 else
 {
 buffer->tail++;
 }

 // Add byte to buffer
 buffer->buffer[ buffer->tail ] = byte;
 }


 uint8_t I2C_TxBufferPop()
 {
 // Return 0xFF if no buffer left (do not rely on this)
 if ( I2C_BufferLen( (I2C_Buffer*)&I2C_TxBuffer ) >= I2C_TxBuffer.size )
 {
 erro_msg("No buffer to pop an entry from... ");
 printHex( I2C_TxBuffer.head );
 print(" ");
 printHex( I2C_TxBuffer.tail );
 print(" ");
 printHex( I2C_TxBuffer.sequencePos );
 print(NL);
 return 0xFF;
 }

 // If there is currently no sequence being sent, the first entry in the RingBuffer is the length
 if ( I2C_TxBuffer.sequencePos == 0 )
 {
 I2C_TxBuffer.sequencePos = 0xFF; // So this doesn't become an infinite loop
 I2C_RxBuffer.sequencePos = I2C_TxBufferPop();
 I2C_TxBuffer.sequencePos = I2C_TxBufferPop();
 }

 uint8_t data = I2C_TxBuffer.buffer[ I2C_TxBuffer.head ];

 // Prune head
 I2C_TxBuffer.head++;

 // Wrap-around case
 if ( I2C_TxBuffer.head >= I2C_TxBuffer.size )
 I2C_TxBuffer.head = 0;

 // Decrement buffer sequence (until next stop will be sent)
 I2C_TxBuffer.sequencePos--;

 /*
 dbug_msg("Popping: ");
 printHex( data );
 print(" ");
 printHex( I2C_TxBuffer.head );
 print(" ");
 printHex( I2C_TxBuffer.tail );
 print(" ");
 printHex( I2C_TxBuffer.sequencePos );
 print(NL);
 */
 return data;
 }


 uint8_t I2C_Send( uint8_t *data, uint8_t sendLen, uint8_t recvLen )
 {
 // Check head and tail pointers
 // If full, return 0
 // If empty, start up I2C Master Tx
 // If buffer is non-empty and non-full, just append to the buffer
 switch ( I2C_BufferCopy( data, sendLen, recvLen, (I2C_Buffer*)&I2C_TxBuffer ) )
 {
 // Not enough buffer space...
 case 0:
 /*
 erro_msg("Not enough Tx buffer space... ");
 printHex( I2C_TxBuffer.head );
 print(":");
 printHex( I2C_TxBuffer.tail );
 print("+");
 printHex( sendLen );
 print("|");
 printHex( I2C_TxBuffer.size );
 print( NL );
 */
 return 0;

 // Empty buffer, initialize I2C
 case 1:
 // Clear status flags
 I2C0_S = I2C_S_IICIF | I2C_S_ARBL;

 // Check to see if we already have control of the bus
 if ( I2C0_C1 & I2C_C1_MST )
 {
 // Already the master (ah yeah), send a repeated start
 I2C0_C1 = I2C_C1_IICEN | I2C_C1_MST | I2C_C1_RSTA | I2C_C1_TX;
 }
 // Otherwise, seize control
 else
 {
 // Wait...till the master dies
 while ( I2C0_S & I2C_S_BUSY );

 // Now we're the master (ah yisss), get ready to send stuffs
 I2C0_C1 = I2C_C1_IICEN | I2C_C1_MST | I2C_C1_TX;
 }

 // Enable I2C interrupt
 I2C0_C1 = I2C_C1_IICEN | I2C_C1_IICIE | I2C_C1_MST | I2C_C1_TX;

 // Depending on what type of transfer, the first byte is configured for R or W
 I2C0_D = I2C_TxBufferPop();

 return 1;
 }

 // Dirty buffer, I2C already initialized
 return 2;
 }



 // LED State processing loop
 inline uint8_t LED_scan()
 {

 // I2C Busy
 // S & I2C_S_BUSY
 //I2C_S_BUSY

 return 0;
 }



 // ----- CLI Command Functions -----

 void cliFunc_i2cSend( char* args )
 {
 char* curArgs;
 char* arg1Ptr;
 char* arg2Ptr = args;

 // Buffer used after interpretting the args, will be sent to I2C functions
 // NOTE: Limited to 8 bytes currently (can be increased if necessary
 #define i2cSend_BuffLenMax 8
 uint8_t buffer[ i2cSend_BuffLenMax ];
 uint8_t bufferLen = 0;

 // No \r\n by default after the command is entered
 print( NL );
 info_msg("Sending: ");

 // Parse args until a \0 is found
 while ( bufferLen < i2cSend_BuffLenMax )
 {
 curArgs = arg2Ptr; // Use the previous 2nd arg pointer to separate the next arg from the list
 CLI_argumentIsolation( curArgs, &arg1Ptr, &arg2Ptr );

 // Stop processing args if no more are found
 if ( *arg1Ptr == '\0' )
 break;

 // If | is found, end sequence and start new one
 if ( *arg1Ptr == '|' )
 {
 print("| ");
 I2C_Send( buffer, bufferLen, 0 );
 bufferLen = 0;
 continue;
 }

 // Interpret the argument
 buffer[ bufferLen++ ] = (uint8_t)numToInt( arg1Ptr );

 // Print out the arg
 dPrint( arg1Ptr );
 print(" ");
 }

 print( NL );

 I2C_Send( buffer, bufferLen, 0 );
 }

 void cliFunc_i2cRecv( char* args )
 {
 char* curArgs;
 char* arg1Ptr;
 char* arg2Ptr = args;

 // Buffer used after interpretting the args, will be sent to I2C functions
 // NOTE: Limited to 8 bytes currently (can be increased if necessary
 #define i2cSend_BuffLenMax 8
 uint8_t buffer[ i2cSend_BuffLenMax ];
 uint8_t bufferLen = 0;

 // No \r\n by default after the command is entered
 print( NL );
 info_msg("Sending: ");

 // Parse args until a \0 is found
 while ( bufferLen < i2cSend_BuffLenMax )
 {
 curArgs = arg2Ptr; // Use the previous 2nd arg pointer to separate the next arg from the list
 CLI_argumentIsolation( curArgs, &arg1Ptr, &arg2Ptr );

 // Stop processing args if no more are found
 if ( *arg1Ptr == '\0' )
 break;

 // If | is found, end sequence and start new one
 if ( *arg1Ptr == '|' )
 {
 print("| ");
 I2C_Send( buffer, bufferLen, 0 );
 bufferLen = 0;
 continue;
 }

 // Interpret the argument
 buffer[ bufferLen++ ] = (uint8_t)numToInt( arg1Ptr );

 // Print out the arg
 dPrint( arg1Ptr );
 print(" ");
 }

 print( NL );

 I2C_Send( buffer, bufferLen, 1 ); // Only 1 byte is ever read at a time with the ISSI chip
 }

 void cliFunc_ledTest( char* args )
 {
 print( NL ); // No \r\n by default after the command is entered
 LED_sendPage( (uint8_t*)examplePage, sizeof( examplePage ), 0 );
 }

 void cliFunc_ledZero( char* args )
 {
 print( NL ); // No \r\n by default after the command is entered
 LED_zeroPages( 0x00, 8, 0x24, 0xB4 ); // Only PWMs
 }

--- a/Scan/ISSILed/led_scan.h
+++ b/Scan/ISSILed/led_scan.h
@@ -0,0 +1,34 @@
 /* Copyright (C) 2014-2015 by Jacob Alexander
 *
 * This file is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This file is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this file. If not, see <http://www.gnu.org/licenses/>.
 */

 #ifndef __LED_SCAN_H
 #define __LED_SCAN_H

 // ----- Includes -----

 // Compiler Includes
 #include <stdint.h>



 // ----- Functions -----

 void LED_setup();
 uint8_t LED_scan();


 #endif // __LED_SCAN_H

--- a/Scan/ISSILed/setup.cmake
+++ b/Scan/ISSILed/setup.cmake
@@ -0,0 +1,30 @@
 ###| CMake Kiibohd Controller Scan Module |###
 #
 # Written by Jacob Alexander in 2014-2015 for the Kiibohd Controller
 #
 # Released into the Public Domain
 #
 ###


 ###
 # Sub-module flag, cannot be included stand-alone
 #
 set ( SubModule 1 )


 ###
 # Module C files
 #
 set ( Module_SRCS
 led_scan.c
 )


 ###
 # Compiler Family Compatibility
 #
 set ( ModuleCompatibility
 arm
 )