1 /* Copyright (C) 2014-2015 by Jacob Alexander
3 * This file is free software: you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License as published by
5 * the Free Software Foundation, either version 3 of the License, or
6 * (at your option) any later version.
8 * This file is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this file. If not, see <http://www.gnu.org/licenses/>.
17 // ----- Includes -----
20 #include <Lib/ScanLib.h>
26 #include <led_conf.h> // Located with scan_loop.c
33 // ----- Defines -----
35 #define I2C_TxBufferLength 300
36 #define I2C_RxBufferLength 8
38 #define LED_BufferLength 144
41 // ----- Structs -----
43 typedef struct I2C_Buffer {
51 typedef struct LED_Buffer {
52 uint8_t buffer[LED_BufferLength];
57 // ----- Function Declarations -----
60 void cliFunc_i2cRecv( char* args );
61 void cliFunc_i2cSend( char* args );
62 void cliFunc_ledPage( char* args );
63 void cliFunc_ledStart( char* args );
64 void cliFunc_ledTest( char* args );
65 void cliFunc_ledZero( char* args );
67 uint8_t I2C_TxBufferPop();
68 void I2C_BufferPush( uint8_t byte, I2C_Buffer *buffer );
69 uint16_t I2C_BufferLen( I2C_Buffer *buffer );
70 uint8_t I2C_Send( uint8_t *data, uint8_t sendLen, uint8_t recvLen );
74 // ----- Variables -----
76 // Scan Module command dictionary
77 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." );
78 CLIDict_Entry( i2cSend, "Send I2C sequence of bytes. Use |'s to split sequences with a stop." );
79 CLIDict_Entry( ledPage, "Read the given register page." );
80 CLIDict_Entry( ledStart, "Disable software shutdown." );
81 CLIDict_Entry( ledTest, "Test out the led pages." );
82 CLIDict_Entry( ledZero, "Zero out LED register pages (non-configuration)." );
84 CLIDict_Def( ledCLIDict, "ISSI LED Module Commands" ) = {
85 CLIDict_Item( i2cRecv ),
86 CLIDict_Item( i2cSend ),
87 CLIDict_Item( ledPage ),
88 CLIDict_Item( ledStart ),
89 CLIDict_Item( ledTest ),
90 CLIDict_Item( ledZero ),
91 { 0, 0, 0 } // Null entry for dictionary end
96 // Before sending the sequence, I2C_TxBuffer_CurLen is assigned and as each byte is sent, it is decremented
97 // Once I2C_TxBuffer_CurLen reaches zero, a STOP on the I2C bus is sent
98 volatile uint8_t I2C_TxBufferPtr[ I2C_TxBufferLength ];
99 volatile uint8_t I2C_RxBufferPtr[ I2C_TxBufferLength ];
101 volatile I2C_Buffer I2C_TxBuffer = { 0, 0, 0, I2C_TxBufferLength, (uint8_t*)I2C_TxBufferPtr };
102 volatile I2C_Buffer I2C_RxBuffer = { 0, 0, 0, I2C_RxBufferLength, (uint8_t*)I2C_RxBufferPtr };
104 LED_Buffer LED_pageBuffer;
107 // A bit mask determining which LEDs are enabled in the ISSI chip
108 // All channel mask example
110 const uint8_t LED_ledEnableMask[] = {
112 0x00, // Starting register address
113 0xFF, 0xFF, // C1-1 -> C1-16
114 0xFF, 0xFF, // C2-1 -> C2-16
115 0xFF, 0xFF, // C3-1 -> C3-16
116 0xFF, 0xFF, // C4-1 -> C4-16
117 0xFF, 0xFF, // C5-1 -> C5-16
118 0xFF, 0xFF, // C6-1 -> C6-16
119 0xFF, 0xFF, // C7-1 -> C7-16
120 0xFF, 0xFF, // C8-1 -> C8-16
121 0xFF, 0xFF, // C9-1 -> C9-16
126 // A bit mask determining which LEDs are enabled in the ISSI chip
127 // Infinity ErgoDox full mask
129 const uint8_t LED_ledEnableMask[] = {
131 0x00, // Starting register address
132 0xFC, 0xFC, // C1-1 -> C1-16
133 0xFB, 0xFB, // C2-1 -> C2-16
134 0xFF, 0xFF, // C3-1 -> C3-16
135 0xFE, 0xFE, // C4-1 -> C4-16
136 0x7F, 0x7F, // C5-1 -> C5-16
137 0xFF, 0xFF, // C6-1 -> C6-16
138 0xCF, 0xCF, // C7-1 -> C7-16
139 0xC7, 0xC7, // C8-1 -> C8-16
140 0x43, 0x43, // C9-1 -> C9-16
145 const uint8_t LED_ledEnableMask[] = {
147 0x00, // Starting register address
148 0x00, 0x00, // C1-1 -> C1-16
149 //0xEC, 0xEC, // C1-1 -> C1-16
150 0x00, 0x00, // C2-1 -> C2-16
151 0x00, 0x00, // C3-1 -> C3-16
152 0x00, 0x00, // C4-1 -> C4-16
153 0x00, 0x00, // C5-1 -> C5-16
154 0x00, 0x00, // C6-1 -> C6-16
155 0x08, 0x08, // C7-1 -> C7-16
156 0x00, 0x00, // C8-1 -> C8-16
157 0x00, 0x00, // C9-1 -> C9-16
163 // XXX Pre-fill example of buffers
164 const uint8_t examplePage[] = {
166 0x24, // Starting register address
167 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // C1-1 -> C1-16
168 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // C2-1 -> C2-16
169 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // C3-1 -> C3-16
170 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // C4-1 -> C4-16
171 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // C5-1 -> C5-16
172 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // C6-1 -> C6-16
173 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // C7-1 -> C7-16
174 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // C8-1 -> C8-16
175 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // C9-1 -> C9-16
179 // XXX Pre-fill example of buffers
180 const uint8_t examplePage[] = {
182 0x24, // Starting register address
183 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, // C1-1 -> C1-16
184 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, // C2-1 -> C2-16
185 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, // C3-1 -> C3-16
186 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F, // C4-1 -> C4-16
187 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, // C5-1 -> C5-16
188 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E, 0x5F, // C6-1 -> C6-16
189 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, // C7-1 -> C7-16
190 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F, // C8-1 -> C8-16
191 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, // C9-1 -> C9-16
196 // ----- Interrupt Functions -----
200 cli(); // Disable Interrupts
202 uint8_t status = I2C0_S; // Read I2C Bus status
204 // Master Mode Transmit
205 if ( I2C0_C1 & I2C_C1_TX )
207 // Check current use of the I2C bus
208 // Currently sending data
209 if ( I2C_TxBuffer.sequencePos > 0 )
211 // Make sure slave sent an ACK
212 if ( status & I2C_S_RXAK )
214 // NACK Detected, disable interrupt
215 erro_print("I2C NAK detected...");
216 I2C0_C1 = I2C_C1_IICEN;
219 I2C_TxBuffer.head = 0;
220 I2C_TxBuffer.tail = 0;
221 I2C_TxBuffer.sequencePos = 0;
226 I2C0_D = I2C_TxBufferPop();
230 else if ( I2C_RxBuffer.sequencePos > 0 )
232 // Master Receive, addr sent
233 if ( status & I2C_S_ARBL )
236 erro_print("Arbitration lost...");
239 I2C0_C1 = I2C_C1_IICEN;
240 I2C0_S = I2C_S_ARBL | I2C_S_IICIF; // Clear ARBL flag and interrupt
242 if ( status & I2C_S_RXAK )
244 // Slave Address NACK Detected, disable interrupt
245 erro_print("Slave Address I2C NAK detected...");
248 I2C0_C1 = I2C_C1_IICEN;
252 dbug_print("Attempting to read byte");
253 I2C0_C1 = I2C_RxBuffer.sequencePos == 1
254 ? I2C_C1_IICEN | I2C_C1_IICIE | I2C_C1_MST | I2C_C1_TXAK // Single byte read
255 : I2C_C1_IICEN | I2C_C1_IICIE | I2C_C1_MST; // Multi-byte read
262 printHex( I2C_BufferLen( (I2C_Buffer*)&I2C_TxBuffer ) );
266 // Delay around STOP to make sure it actually happens...
267 delayMicroseconds( 1 );
268 I2C0_C1 = I2C_C1_IICEN; // Send STOP
269 delayMicroseconds( 7 );
271 // If there is another sequence, start sending
272 if ( I2C_BufferLen( (I2C_Buffer*)&I2C_TxBuffer ) < I2C_TxBuffer.size )
274 // Clear status flags
275 I2C0_S = I2C_S_IICIF | I2C_S_ARBL;
277 // Wait...till the master dies
278 while ( I2C0_S & I2C_S_BUSY );
280 // Enable I2C interrupt
281 I2C0_C1 = I2C_C1_IICEN | I2C_C1_IICIE | I2C_C1_MST | I2C_C1_TX;
284 I2C0_D = I2C_TxBufferPop();
288 // Master Mode Receive
291 // XXX Do we need to handle 2nd last byte?
292 //I2C0_C1 = I2C_C1_IICEN | I2C_C1_IICIE | I2C_C1_MST | I2C_C1_TXAK; // No STOP, Rx, NAK on recv
295 if ( I2C_TxBuffer.sequencePos <= 1 )
298 I2C0_C1 = I2C_C1_IICEN | I2C_C1_MST | I2C_C1_TX;
301 I2C_BufferPush( I2C0_D, (I2C_Buffer*)&I2C_RxBuffer );
303 delayMicroseconds( 1 ); // Should be enough time before issuing the stop
304 I2C0_C1 = I2C_C1_IICEN; // Send STOP
309 I2C_BufferPush( I2C0_D, (I2C_Buffer*)&I2C_RxBuffer );
313 I2C0_S = I2C_S_IICIF; // Clear interrupt
315 sei(); // Re-enable Interrupts
320 // ----- Functions -----
322 inline void I2C_setup()
324 // Enable I2C internal clock
325 SIM_SCGC4 |= SIM_SCGC4_I2C0; // Bus 0
327 // External pull-up resistor
328 PORTB_PCR0 = PORT_PCR_ODE | PORT_PCR_SRE | PORT_PCR_DSE | PORT_PCR_MUX(2);
329 PORTB_PCR1 = PORT_PCR_ODE | PORT_PCR_SRE | PORT_PCR_DSE | PORT_PCR_MUX(2);
331 // SCL Frequency Divider
332 // 400kHz -> 120 (0x85) @ 48 MHz F_BUS
335 I2C0_C1 = I2C_C1_IICEN;
336 I2C0_C2 = I2C_C2_HDRS; // High drive select
338 // Enable I2C Interrupt
339 NVIC_ENABLE_IRQ( IRQ_I2C0 );
342 void LED_zeroPages( uint8_t startPage, uint8_t numPages, uint8_t startReg, uint8_t endReg )
345 uint8_t pageSetup[] = { 0xE8, 0xFD, 0x00 };
347 // Max length of a page + chip id + reg start
348 uint8_t fullPage[ 0xB4 + 2 ] = { 0 }; // Max size of page
349 fullPage[0] = 0xE8; // Set chip id
350 fullPage[1] = startReg; // Set start reg
352 // Iterate through given pages, zero'ing out the given register regions
353 for ( uint8_t page = startPage; page < startPage + numPages; page++ )
359 while ( I2C_Send( pageSetup, sizeof( pageSetup ), 0 ) == 0 )
363 while ( I2C_Send( fullPage, endReg - startReg + 2, 0 ) == 0 )
368 void LED_sendPage( uint8_t *buffer, uint8_t len, uint8_t page )
371 uint8_t pageSetup[] = { 0xE8, 0xFD, page };
374 while ( I2C_Send( pageSetup, sizeof( pageSetup ), 0 ) == 0 )
377 // Write page to I2C Tx Buffer
378 while ( I2C_Send( buffer, len, 0 ) == 0 )
383 void LED_readPage( uint8_t len, uint8_t page )
386 uint8_t pageSetup[] = { 0xE8, 0xFD, page };
389 while ( I2C_Send( pageSetup, sizeof( pageSetup ), 0 ) == 0 )
393 uint8_t regSetup[] = { 0xE8, 0x00 };
395 // Setup starting register
396 while ( I2C_Send( regSetup, sizeof( regSetup ), 0 ) == 0 )
399 // Register Read Command
400 uint8_t regReadCmd[] = { 0xE9 };
402 // Read each register in the page
403 for ( uint8_t reg = 0; reg < len; reg++ )
405 // Request register data
406 while ( I2C_Send( regReadCmd, sizeof( regReadCmd ), 0 ) == 0 )
411 void LED_writeReg( uint8_t reg, uint8_t val, uint8_t page )
414 uint8_t pageSetup[] = { 0xE8, 0xFD, page };
417 uint8_t writeData[] = { 0xE8, reg, val };
420 while ( I2C_Send( pageSetup, sizeof( pageSetup ), 0 ) == 0 )
423 while ( I2C_Send( writeData, sizeof( writeData ), 0 ) == 0 )
428 inline void LED_setup()
430 // Register Scan CLI dictionary
431 CLI_registerDictionary( ledCLIDict, ledCLIDictName );
436 // Zero out Frame Registers
437 // This needs to be done before disabling the hardware shutdown (or the leds will do undefined things)
438 LED_zeroPages( 0x0B, 1, 0x00, 0x0C ); // Control Registers
440 // Disable Hardware shutdown of ISSI chip (pull high)
441 GPIOB_PDDR |= (1<<16);
442 PORTB_PCR16 = PORT_PCR_SRE | PORT_PCR_DSE | PORT_PCR_MUX(1);
443 GPIOB_PSOR |= (1<<16);
446 LED_zeroPages( 0x00, 8, 0x00, 0xB4 ); // LED Registers
448 // Enable LEDs based upon mask
449 LED_sendPage( (uint8_t*)LED_ledEnableMask, sizeof( LED_ledEnableMask ), 0 );
451 // Disable Software shutdown of ISSI chip
452 LED_writeReg( 0x0A, 0x01, 0x0B );
456 inline uint8_t I2C_BufferCopy( uint8_t *data, uint8_t sendLen, uint8_t recvLen, I2C_Buffer *buffer )
460 // If sendLen is greater than buffer fail right away
461 if ( sendLen > buffer->size )
464 // Calculate new tail to determine if buffer has enough space
465 // The first element specifies the expected number of bytes from the slave (+1)
466 // The second element in the new buffer is the length of the buffer sequence (+1)
467 uint16_t newTail = buffer->tail + sendLen + 2;
468 if ( newTail >= buffer->size )
469 newTail -= buffer->size;
471 if ( I2C_BufferLen( buffer ) < sendLen + 2 )
476 printHex( sendLen + 2 );
484 // If buffer is clean, return 1, otherwise 2
485 reTurn = buffer->head == buffer->tail ? 1 : 2;
487 // Add to buffer, already know there is enough room (simplifies adding logic)
488 uint8_t bufferHeaderPos = 0;
489 for ( uint16_t c = 0; c < sendLen; c++ )
491 // Add data to buffer
492 switch ( bufferHeaderPos )
495 buffer->buffer[ buffer->tail ] = recvLen;
501 buffer->buffer[ buffer->tail ] = sendLen;
507 buffer->buffer[ buffer->tail ] = data[ c ];
511 // Check for wrap-around case
512 if ( buffer->tail + 1 >= buffer->size )
527 inline uint16_t I2C_BufferLen( I2C_Buffer *buffer )
530 if ( buffer->tail >= buffer->head )
531 return buffer->head + buffer->size - buffer->tail;
534 return buffer->head - buffer->tail;
538 void I2C_BufferPush( uint8_t byte, I2C_Buffer *buffer )
543 // Make sure buffer isn't full
544 if ( buffer->tail + 1 == buffer->head || ( buffer->head > buffer->tail && buffer->tail + 1 - buffer->size == buffer->head ) )
546 warn_msg("I2C_BufferPush failed, buffer full: ");
552 // Check for wrap-around case
553 if ( buffer->tail + 1 >= buffer->size )
563 // Add byte to buffer
564 buffer->buffer[ buffer->tail ] = byte;
568 uint8_t I2C_TxBufferPop()
570 // Return 0xFF if no buffer left (do not rely on this)
571 if ( I2C_BufferLen( (I2C_Buffer*)&I2C_TxBuffer ) >= I2C_TxBuffer.size )
573 erro_msg("No buffer to pop an entry from... ");
574 printHex( I2C_TxBuffer.head );
576 printHex( I2C_TxBuffer.tail );
578 printHex( I2C_TxBuffer.sequencePos );
583 // If there is currently no sequence being sent, the first entry in the RingBuffer is the length
584 if ( I2C_TxBuffer.sequencePos == 0 )
586 I2C_TxBuffer.sequencePos = 0xFF; // So this doesn't become an infinite loop
587 I2C_RxBuffer.sequencePos = I2C_TxBufferPop();
588 I2C_TxBuffer.sequencePos = I2C_TxBufferPop();
591 uint8_t data = I2C_TxBuffer.buffer[ I2C_TxBuffer.head ];
597 if ( I2C_TxBuffer.head >= I2C_TxBuffer.size )
598 I2C_TxBuffer.head = 0;
600 // Decrement buffer sequence (until next stop will be sent)
601 I2C_TxBuffer.sequencePos--;
604 dbug_msg("Popping: ");
607 printHex( I2C_TxBuffer.head );
609 printHex( I2C_TxBuffer.tail );
611 printHex( I2C_TxBuffer.sequencePos );
618 uint8_t I2C_Send( uint8_t *data, uint8_t sendLen, uint8_t recvLen )
620 // Check head and tail pointers
622 // If empty, start up I2C Master Tx
623 // If buffer is non-empty and non-full, just append to the buffer
624 switch ( I2C_BufferCopy( data, sendLen, recvLen, (I2C_Buffer*)&I2C_TxBuffer ) )
626 // Not enough buffer space...
629 erro_msg("Not enough Tx buffer space... ");
630 printHex( I2C_TxBuffer.head );
632 printHex( I2C_TxBuffer.tail );
636 printHex( I2C_TxBuffer.size );
641 // Empty buffer, initialize I2C
643 // Clear status flags
644 I2C0_S = I2C_S_IICIF | I2C_S_ARBL;
646 // Check to see if we already have control of the bus
647 if ( I2C0_C1 & I2C_C1_MST )
649 // Already the master (ah yeah), send a repeated start
650 I2C0_C1 = I2C_C1_IICEN | I2C_C1_MST | I2C_C1_RSTA | I2C_C1_TX;
652 // Otherwise, seize control
655 // Wait...till the master dies
656 while ( I2C0_S & I2C_S_BUSY );
658 // Now we're the master (ah yisss), get ready to send stuffs
659 I2C0_C1 = I2C_C1_IICEN | I2C_C1_MST | I2C_C1_TX;
662 // Enable I2C interrupt
663 I2C0_C1 = I2C_C1_IICEN | I2C_C1_IICIE | I2C_C1_MST | I2C_C1_TX;
665 // Depending on what type of transfer, the first byte is configured for R or W
666 I2C0_D = I2C_TxBufferPop();
671 // Dirty buffer, I2C already initialized
677 // LED State processing loop
678 inline uint8_t LED_scan()
690 // ----- CLI Command Functions -----
692 void cliFunc_i2cSend( char* args )
696 char* arg2Ptr = args;
698 // Buffer used after interpretting the args, will be sent to I2C functions
699 // NOTE: Limited to 8 bytes currently (can be increased if necessary
700 #define i2cSend_BuffLenMax 8
701 uint8_t buffer[ i2cSend_BuffLenMax ];
702 uint8_t bufferLen = 0;
704 // No \r\n by default after the command is entered
706 info_msg("Sending: ");
708 // Parse args until a \0 is found
709 while ( bufferLen < i2cSend_BuffLenMax )
711 curArgs = arg2Ptr; // Use the previous 2nd arg pointer to separate the next arg from the list
712 CLI_argumentIsolation( curArgs, &arg1Ptr, &arg2Ptr );
714 // Stop processing args if no more are found
715 if ( *arg1Ptr == '\0' )
718 // If | is found, end sequence and start new one
719 if ( *arg1Ptr == '|' )
722 I2C_Send( buffer, bufferLen, 0 );
727 // Interpret the argument
728 buffer[ bufferLen++ ] = (uint8_t)numToInt( arg1Ptr );
737 I2C_Send( buffer, bufferLen, 0 );
740 void cliFunc_i2cRecv( char* args )
744 char* arg2Ptr = args;
746 // Buffer used after interpretting the args, will be sent to I2C functions
747 // NOTE: Limited to 8 bytes currently (can be increased if necessary
748 #define i2cSend_BuffLenMax 8
749 uint8_t buffer[ i2cSend_BuffLenMax ];
750 uint8_t bufferLen = 0;
752 // No \r\n by default after the command is entered
754 info_msg("Sending: ");
756 // Parse args until a \0 is found
757 while ( bufferLen < i2cSend_BuffLenMax )
759 curArgs = arg2Ptr; // Use the previous 2nd arg pointer to separate the next arg from the list
760 CLI_argumentIsolation( curArgs, &arg1Ptr, &arg2Ptr );
762 // Stop processing args if no more are found
763 if ( *arg1Ptr == '\0' )
766 // If | is found, end sequence and start new one
767 if ( *arg1Ptr == '|' )
770 I2C_Send( buffer, bufferLen, 0 );
775 // Interpret the argument
776 buffer[ bufferLen++ ] = (uint8_t)numToInt( arg1Ptr );
785 I2C_Send( buffer, bufferLen, 1 ); // Only 1 byte is ever read at a time with the ISSI chip
788 void cliFunc_ledPage( char* args )
790 // Parse number from argument
791 // NOTE: Only first argument is used
794 CLI_argumentIsolation( args, &arg1Ptr, &arg2Ptr );
796 // Default to 0 if no argument is given
799 if ( arg1Ptr[0] != '\0' )
801 page = (uint8_t)numToInt( arg1Ptr );
804 // No \r\n by default after the command is entered
807 LED_readPage( 0xB4, page );
810 void cliFunc_ledStart( char* args )
812 print( NL ); // No \r\n by default after the command is entered
813 LED_zeroPages( 0x0B, 1, 0x00, 0x0C ); // Control Registers
814 //LED_zeroPages( 0x00, 8, 0x00, 0xB4 ); // LED Registers
815 LED_writeReg( 0x0A, 0x01, 0x0B );
816 LED_sendPage( (uint8_t*)LED_ledEnableMask, sizeof( LED_ledEnableMask ), 0 );
820 void cliFunc_ledTest( char* args )
822 print( NL ); // No \r\n by default after the command is entered
823 LED_sendPage( (uint8_t*)examplePage, sizeof( examplePage ), 0 );
826 void cliFunc_ledZero( char* args )
828 print( NL ); // No \r\n by default after the command is entered
829 LED_zeroPages( 0x00, 8, 0x24, 0xB4 ); // Only PWMs