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LEDs now doing something :D

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This commit is contained in:
Jacob Alexander 2014-12-06 00:35:39 -08:00
parent 7dfca9cc3e
commit b4f8fd0fa1
1 changed files with 78 additions and 55 deletions
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131
Scan/MD2/scan_loop.c
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@ -38,11 +38,11 @@
typedef struct I2C_Buffer {
volatile uint16_t head;
volatile uint16_t tail;
volatile uint8_t sequencePos;
volatile uint16_t size;
volatile uint8_t *buffer;
uint16_t head;
uint16_t tail;
uint8_t sequencePos;
uint16_t size;
uint8_t *buffer;
} I2C_Buffer;
// ----- Function Declarations -----
@ -56,6 +56,7 @@ 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 );
@ -63,8 +64,8 @@ uint16_t I2C_BufferLen( I2C_Buffer *buffer );
// Scan Module command dictionary
CLIDict_Entry( echo, "Example command, echos the arguments." );
CLIDict_Entry( i2cRecv, "Send I2C sequence of bytes and expect a reply of 1 byte." );
CLIDict_Entry( i2cSend, "Send I2C sequence of bytes." );
CLIDict_Entry( i2cRecv, "Send I2C sequence of bytes and expect a reply of 1 byte on the last sequence. Use |'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( ledZero, "Zero out LED register pages (non-configuration)." );
CLIDict_Def( scanCLIDict, "Scan Module Commands" ) = {
@ -87,8 +88,8 @@ uint16_t Scan_scanCount = 0;
volatile uint8_t I2C_TxBufferPtr[ I2C_TxBufferLength ];
volatile uint8_t I2C_RxBufferPtr[ I2C_TxBufferLength ];
volatile I2C_Buffer I2C_TxBuffer = { 0, 0, 0, I2C_TxBufferLength, I2C_TxBufferPtr };
volatile I2C_Buffer I2C_RxBuffer = { 0, 0, 0, I2C_RxBufferLength, I2C_RxBufferPtr };
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 };
void I2C_setup()
{
@ -168,6 +169,7 @@ void i2c0_isr()
}
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
@ -175,41 +177,32 @@ void i2c0_isr()
}
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 )
{
// 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
{
// Clear status flags
I2C0_S = I2C_S_IICIF | I2C_S_ARBL;
// 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;
// Transmit byte
I2C0_D = I2C_TxBufferPop();
}
// Issue STOP
else
{
delayMicroseconds( 1 ); // Should be enough time before issuing STOP
I2C0_C1 = I2C_C1_IICEN; // Send STOP
}
}
}
// Master Mode Receive
@ -246,10 +239,45 @@ void i2c0_isr()
// ----- Functions -----
void LED_zeroPages( uint8_t startPage, uint8_t numPages, uint8_t pageLen )
{
// Page Setup
uint8_t pageSetup[] = { 0xE8, 0xFD, 0x00 };
// Max length of a page + chip id + reg start
uint8_t fullPage[ 0xB3 + 2 ] = { 0 };
fullPage[0] = 0xE8; // Set chip id, starting reg is already 0x00
// 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, pageLen + 2, 0 ) == 0 )
delay(1);
}
}
// Setup
inline void LED_setup()
{
I2C_setup();
// Zero out Frame Registers
LED_zeroPages( 0x00, 8, 0xB3 ); // LED Registers
LED_zeroPages( 0x0B, 1, 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);
}
@ -397,6 +425,7 @@ uint8_t I2C_TxBufferPop()
// Decrement buffer sequence (until next stop will be sent)
I2C_TxBuffer.sequencePos--;
/*
dbug_msg("Popping: ");
printHex( data );
print(" ");
@ -406,6 +435,7 @@ uint8_t I2C_TxBufferPop()
print(" ");
printHex( I2C_TxBuffer.sequencePos );
print(NL);
*/
return data;
}
@ -459,6 +489,7 @@ uint8_t I2C_Send( uint8_t *data, uint8_t sendLen, uint8_t recvLen )
// Depending on what type of transfer, the first byte is configured for R or W
I2C0_D = I2C_TxBufferPop();
return 1;
}
@ -467,32 +498,6 @@ uint8_t I2C_Send( uint8_t *data, uint8_t sendLen, uint8_t recvLen )
}
void LED_zeroPages( uint8_t startPage, uint8_t numPages, uint8_t pageLen )
{
// Page Setup
uint8_t pageSetup[] = { 0xE8, 0xFD, 0x00 };
// Max length of a page + chip id + reg start
uint8_t fullPage[ 0xB3 + 2 ] = { 0 };
fullPage[0] = 0xE8; // Set chip id, starting reg is already 0x00
// 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, pageLen + 2, 0 ) == 0 )
delay(1);
}
}
// LED State processing loop
inline uint8_t LED_loop()
@ -599,6 +604,15 @@ void cliFunc_i2cSend( char* args )
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 );
@ -638,6 +652,15 @@ void cliFunc_i2cRecv( char* args )
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 );