/**
* @author Jonathan Hui <jhui@archrock.com>
* @author Vlado Handziski <handzisk@tkn.tu-berlin.de>
+ * @author Eric B. Decker <cire831@gmail.com>
* @version $Revision$ $Date$
*/
provides interface Resource[ uint8_t id ];
provides interface ResourceConfigure[ uint8_t id ];
- provides interface Msp430UartControl as UartControl[ uint8_t id ];
- provides interface UartStream;
- provides interface UartByte;
+ provides interface UartStream[ uint8_t id ];
+ provides interface UartByte[ uint8_t id ];
uses interface Resource as UsartResource[ uint8_t id ];
uses interface Msp430UartConfigure[ uint8_t id ];
uses interface HplMsp430Usart as Usart;
- uses interface HplMsp430UsartInterrupts as UsartInterrupts;
+ uses interface HplMsp430UsartInterrupts as UsartInterrupts[ uint8_t id ];
uses interface Counter<T32khz,uint16_t>;
uses interface Leds;
norace uint16_t m_tx_len, m_rx_len;
norace uint16_t m_tx_pos, m_rx_pos;
norace uint8_t m_byte_time;
+ norace uint8_t current_owner;
async command error_t Resource.immediateRequest[ uint8_t id ]() {
return call UsartResource.immediateRequest[ id ]();
}
async command error_t Resource.release[ uint8_t id ]() {
+ if (call UsartResource.isOwner[id]() == FALSE)
+ return FAIL;
if ( m_rx_buf || m_tx_buf )
return EBUSY;
return call UsartResource.release[ id ]();
}
async command void ResourceConfigure.configure[ uint8_t id ]() {
- call UartControl.setModeDuplex[id]();
+ msp430_uart_union_config_t* config = call Msp430UartConfigure.getConfig[id]();
+ m_byte_time = config->uartConfig.ubr / 2;
+ call Usart.setModeUart(config);
+ call Usart.enableIntr();
}
async command void ResourceConfigure.unconfigure[ uint8_t id ]() {
+ call Usart.resetUsart(TRUE);
call Usart.disableIntr();
call Usart.disableUart();
+
+ /* leave the usart in reset */
+ //call Usart.resetUsart(FALSE); // this shouldn't be called.
}
event void UsartResource.granted[ uint8_t id ]() {
signal Resource.granted[ id ]();
}
-
- async command void UartControl.setModeRx[ uint8_t id ]() {
- msp430_uart_config_t* config = call Msp430UartConfigure.getConfig[id]();
- m_byte_time = config->ubr / 2;
- call Usart.setModeUartRx(config);
- call Usart.clrIntr();
- call Usart.enableRxIntr();
- }
-
- async command void UartControl.setModeTx[ uint8_t id ]() {
- call Usart.setModeUartTx(call Msp430UartConfigure.getConfig[id]());
- call Usart.clrIntr();
- call Usart.enableTxIntr();
- }
-
- async command void UartControl.setModeDuplex[ uint8_t id ]() {
- msp430_uart_config_t* config = call Msp430UartConfigure.getConfig[id]();
- m_byte_time = config->ubr / 2;
- call Usart.setModeUart(config);
- call Usart.clrIntr();
- call Usart.enableIntr();
- }
- async command error_t UartStream.enableReceiveInterrupt() {
+ async command error_t UartStream.enableReceiveInterrupt[ uint8_t id ]() {
+ if (call UsartResource.isOwner[id]() == FALSE)
+ return FAIL;
call Usart.enableRxIntr();
return SUCCESS;
}
- async command error_t UartStream.disableReceiveInterrupt() {
+ async command error_t UartStream.disableReceiveInterrupt[ uint8_t id ]() {
+ if (call UsartResource.isOwner[id]() == FALSE)
+ return FAIL;
call Usart.disableRxIntr();
return SUCCESS;
}
- async command error_t UartStream.receive( uint8_t* buf, uint16_t len ) {
+ async command error_t UartStream.receive[ uint8_t id ]( uint8_t* buf, uint16_t len ) {
+ if (call UsartResource.isOwner[id]() == FALSE)
+ return FAIL;
if ( len == 0 )
return FAIL;
atomic {
return SUCCESS;
}
- async event void UsartInterrupts.rxDone( uint8_t data ) {
+ async event void UsartInterrupts.rxDone[uint8_t id]( uint8_t data ) {
if ( m_rx_buf ) {
m_rx_buf[ m_rx_pos++ ] = data;
if ( m_rx_pos >= m_rx_len ) {
uint8_t* buf = m_rx_buf;
m_rx_buf = NULL;
- signal UartStream.receiveDone( buf, m_rx_len, SUCCESS );
+ signal UartStream.receiveDone[id]( buf, m_rx_len, SUCCESS );
}
- }
- else {
- signal UartStream.receivedByte( data );
+ } else {
+ signal UartStream.receivedByte[id]( data );
}
}
- async command error_t UartStream.send( uint8_t* buf, uint16_t len ) {
+ async command error_t UartStream.send[ uint8_t id ]( uint8_t* buf, uint16_t len ) {
+ if (call UsartResource.isOwner[id]() == FALSE)
+ return FAIL;
if ( len == 0 )
return FAIL;
else if ( m_tx_buf )
m_tx_buf = buf;
m_tx_len = len;
m_tx_pos = 0;
+ current_owner = id;
call Usart.tx( buf[ m_tx_pos++ ] );
return SUCCESS;
}
- async event void UsartInterrupts.txDone() {
- if ( m_tx_pos < m_tx_len ) {
+ async event void UsartInterrupts.txDone[uint8_t id]() {
+ if(current_owner != id) {
+ uint8_t* buf = m_tx_buf;
+ m_tx_buf = NULL;
+ signal UartStream.sendDone[id]( buf, m_tx_len, FAIL );
+ }
+ else if ( m_tx_pos < m_tx_len ) {
call Usart.tx( m_tx_buf[ m_tx_pos++ ] );
}
else {
uint8_t* buf = m_tx_buf;
m_tx_buf = NULL;
- signal UartStream.sendDone( buf, m_tx_len, SUCCESS );
+ signal UartStream.sendDone[id]( buf, m_tx_len, SUCCESS );
}
}
- async command error_t UartByte.send( uint8_t data ) {
+ async command error_t UartByte.send[ uint8_t id ]( uint8_t data ) {
+ if (call UsartResource.isOwner[id]() == FALSE)
+ return FAIL;
+ call Usart.clrTxIntr();
+ call Usart.disableTxIntr ();
call Usart.tx( data );
while( !call Usart.isTxIntrPending() );
+ call Usart.clrTxIntr();
+ call Usart.enableTxIntr();
return SUCCESS;
}
- async command error_t UartByte.receive( uint8_t* byte, uint8_t timeout ) {
+ async command error_t UartByte.receive[ uint8_t id ]( uint8_t* byte, uint8_t timeout ) {
uint16_t timeout_micro = m_byte_time * timeout + 1;
uint16_t start;
+ if (call UsartResource.isOwner[id]() == FALSE)
+ return FAIL;
start = call Counter.get();
while( !call Usart.isRxIntrPending() ) {
if ( ( call Counter.get() - start ) >= timeout_micro )
- return FAIL;
+ return FAIL;
}
*byte = call Usart.rx();
default async command error_t UsartResource.request[ uint8_t id ]() { return FAIL; }
default async command error_t UsartResource.immediateRequest[ uint8_t id ]() { return FAIL; }
default async command error_t UsartResource.release[ uint8_t id ]() { return FAIL; }
- default async command msp430_uart_config_t* Msp430UartConfigure.getConfig[uint8_t id]() {
+ default async command msp430_uart_union_config_t* Msp430UartConfigure.getConfig[uint8_t id]() {
return &msp430_uart_default_config;
}
default event void Resource.granted[ uint8_t id ]() {}
+
+ default async event void UartStream.sendDone[ uint8_t id ](uint8_t* buf, uint16_t len, error_t error) {}
+ default async event void UartStream.receivedByte[ uint8_t id ](uint8_t byte) {}
+ default async event void UartStream.receiveDone[ uint8_t id ]( uint8_t* buf, uint16_t len, error_t error ) {}
}