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LM3 Platform - CAN consts for initial speed, message objects, flags use bytes instead of longs

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This commit is contained in:
ecdr 2013-08-17 19:15:40 -07:00
parent c231439ccf
commit bc22f97bd2
1 changed files with 24 additions and 12 deletions
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36
src/platform/lm3s/platform.c
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@ -245,9 +245,20 @@ pio_type platform_pio_op( unsigned port, pio_type pinmask, int op )
#if defined( BUILD_CAN )
volatile u32 can_rx_flag = 0;
volatile u32 can_tx_flag = 0;
volatile u32 can_err_flag = 0;
// Speed used in INIT
#ifndef CAN_INIT_SPEED
#define CAN_INIT_SPEED 500000
#endif
// Message object for receiving
#define CAN_MSG_OBJ_RX 1
// Message object for transmitting
#define CAN_MSG_OBJ_TX 2
volatile u8 can_rx_flag = 0;
volatile u8 can_tx_flag = 0;
volatile u8 can_err_flag = 0;
char can_tx_buf[PLATFORM_CAN_MAXLEN];
tCANMsgObject can_msg_rx;
@ -268,15 +279,15 @@ void CANIntHandler(void)
can_err_flag = 1;
can_tx_flag = 0;
}
else if( status == 1 ) // Message receive
else if( status == CAN_MSG_OBJ_RX ) // Message receive
{
CANIntClear(CAN0_BASE, 1);
CANIntClear(CAN0_BASE, CAN_MSG_OBJ_RX);
can_rx_flag = 1;
can_err_flag = 0;
}
else if( status == 2 ) // Message send
else if( status == CAN_MSG_OBJ_TX ) // Message send
{
CANIntClear(CAN0_BASE, 2);
CANIntClear(CAN0_BASE, CAN_MSG_OBJ_TX);
can_tx_flag = 0;
can_err_flag = 0;
}
@ -289,7 +300,7 @@ void cans_init( void )
{
MAP_SysCtlPeripheralEnable( SYSCTL_PERIPH_CAN0 );
MAP_CANInit( CAN0_BASE );
CANBitRateSet(CAN0_BASE, LM3S_CAN_CLOCK, 500000);
CANBitRateSet(CAN0_BASE, LM3S_CAN_CLOCK, CAN_INIT_SPEED);
MAP_CANIntEnable( CAN0_BASE, CAN_INT_MASTER | CAN_INT_ERROR | CAN_INT_STATUS );
MAP_IntEnable(INT_CAN0);
MAP_CANEnable(CAN0_BASE);
@ -299,7 +310,7 @@ void cans_init( void )
can_msg_rx.ulMsgIDMask = 0;
can_msg_rx.ulFlags = MSG_OBJ_RX_INT_ENABLE | MSG_OBJ_USE_ID_FILTER;
can_msg_rx.ulMsgLen = PLATFORM_CAN_MAXLEN;
MAP_CANMessageSet(CAN0_BASE, 1, &can_msg_rx, MSG_OBJ_TYPE_RX);
MAP_CANMessageSet(CAN0_BASE, CAN_MSG_OBJ_RX, &can_msg_rx, MSG_OBJ_TYPE_RX);
}
@ -338,7 +349,7 @@ void platform_can_send( unsigned id, u32 canid, u8 idtype, u8 len, const u8 *dat
DUFF_DEVICE_8( len, *d++ = *s++ );
can_tx_flag = 1;
CANMessageSet(CAN0_BASE, 2, &msg_tx, MSG_OBJ_TYPE_TX);
CANMessageSet(CAN0_BASE, CAN_MSG_OBJ_TX, &msg_tx, MSG_OBJ_TYPE_TX);
}
int platform_can_recv( unsigned id, u32 *canid, u8 *idtype, u8 *len, u8 *data )
@ -347,7 +358,7 @@ int platform_can_recv( unsigned id, u32 *canid, u8 *idtype, u8 *len, u8 *data )
if( can_rx_flag != 0 )
{
can_msg_rx.pucMsgData = data;
CANMessageGet(CAN0_BASE, 1, &can_msg_rx, 0);
CANMessageGet(CAN0_BASE, CAN_MSG_OBJ_RX, &can_msg_rx, 0);
can_rx_flag = 0;
*canid = ( u32 )can_msg_rx.ulMsgID;
@ -359,7 +370,8 @@ int platform_can_recv( unsigned id, u32 *canid, u8 *idtype, u8 *len, u8 *data )
return PLATFORM_UNDERFLOW;
}
#endif
#endif // BUILD_CAN
// ****************************************************************************
// SPI