diff options
Diffstat (limited to 'os/hal/platforms/AT91SAM7/serial_lld.c')
| -rw-r--r-- | os/hal/platforms/AT91SAM7/serial_lld.c | 79 |
1 files changed, 73 insertions, 6 deletions
diff --git a/os/hal/platforms/AT91SAM7/serial_lld.c b/os/hal/platforms/AT91SAM7/serial_lld.c index 33917b38f..d156a6553 100644 --- a/os/hal/platforms/AT91SAM7/serial_lld.c +++ b/os/hal/platforms/AT91SAM7/serial_lld.c @@ -51,9 +51,19 @@ #define SAM7_DBGU_RX AT91C_PA27_DRXD
#define SAM7_DBGU_TX AT91C_PA28_DTXD
+#elif (SAM7_PLATFORM == SAM7A3)
+#define SAM7_USART0_RX AT91C_PA2_RXD0
+#define SAM7_USART0_TX AT91C_PA3_TXD0
+#define SAM7_USART1_RX AT91C_PA7_RXD1
+#define SAM7_USART1_TX AT91C_PA8_TXD1
+#define SAM7_USART2_RX AT91C_PA9_RXD2
+#define SAM7_USART2_TX AT91C_PA10_TXD2
+#define SAM7_DBGU_RX AT91C_PA30_DRXD
+#define SAM7_DBGU_TX AT91C_PA31_DTXD
+
#else
#error "serial lines not defined for this SAM7 version"
-#endif
+#endif /* HAL_USE_SERIAL */
/*===========================================================================*/
/* Driver exported variables. */
@@ -68,10 +78,17 @@ SerialDriver SD1; /** @brief USART1 serial driver identifier.*/
SerialDriver SD2;
#endif
+ +#if (SAM7_PLATFORM == SAM7A3)
+#if USE_SAM7_USART2 || defined(__DOXYGEN__)
+/** @brief USART2 serial driver identifier.*/
+SerialDriver SD3;
+#endif
+#endif
#if USE_SAM7_DBGU_UART || defined(__DOXYGEN__)
/** @brief DBGU_UART serial driver identifier.*/
-SerialDriver SD3;
+SerialDriver SDDBG;
#endif
/*===========================================================================*/
@@ -212,10 +229,20 @@ static void notify2(GenericQueue *qp) { }
#endif
-#if USE_SAM7_DBGU_UART || defined(__DOXYGEN__)
+#if (SAM7_PLATFORM == SAM7A3)
+#if USE_SAM7_USART2 || defined(__DOXYGEN__)
static void notify3(GenericQueue *qp) {
(void)qp;
+ AT91C_BASE_US2->US_IER = AT91C_US_TXRDY;
+}
+#endif
+#endif /* (SAM7_PLATFORM == SAM7A3) */
+
+#if USE_SAM7_DBGU_UART || defined(__DOXYGEN__)
+static void notify_dbg(GenericQueue *qp) {
+
+ (void)qp;
AT91C_BASE_DBGU->DBGU_IER = AT91C_US_TXRDY;
}
#endif
@@ -254,6 +281,23 @@ CH_IRQ_HANDLER(USART1IrqHandler) { }
#endif
+#if (SAM7_PLATFORM == SAM7A3)
+#if USE_SAM7_USART2 || defined(__DOXYGEN__)
+/**
+ * @brief USART2 interrupt handler.
+ *
+ * @isr
+ */
+CH_IRQ_HANDLER(USART2IrqHandler) {
+
+ CH_IRQ_PROLOGUE();
+ sd_lld_serve_interrupt(&SD3);
+ AT91C_BASE_AIC->AIC_EOICR = 0;
+ CH_IRQ_EPILOGUE();
+}
+#endif
+#endif /* (SAM7_PLATFORM == SAM7A3) */
+
/* note - DBGU_UART IRQ is the SysIrq in board.c
since it's not vectored separately by the AIC.*/
@@ -290,12 +334,25 @@ void sd_lld_init(void) { USART1IrqHandler);
#endif
-#if USE_SAM7_DBGU_UART
+#if (SAM7_PLATFORM == SAM7A3)
+#if USE_SAM7_USART2
sdObjectInit(&SD3, NULL, notify3);
+ SD3.usart = AT91C_BASE_US2;
+ AT91C_BASE_PIOA->PIO_PDR = SAM7_USART2_RX | SAM7_USART2_TX;
+ AT91C_BASE_PIOA->PIO_ASR = SAM7_USART2_RX | SAM7_USART2_TX;
+ AT91C_BASE_PIOA->PIO_PPUDR = SAM7_USART2_RX | SAM7_USART2_TX;
+ AIC_ConfigureIT(AT91C_ID_US2,
+ AT91C_AIC_SRCTYPE_HIGH_LEVEL | SAM7_USART2_PRIORITY,
+ USART2IrqHandler);
+#endif
+#endif /* (SAM7_PLATFORM == SAM7A3) */
+
+#if USE_SAM7_DBGU_UART
+ sdObjectInit(&SDDBG, NULL, notify_dbg);
/* this is a little cheap, but OK for now since there's enough overlap
between dbgu and usart register maps. it means we can reuse all the
same usart interrupt handling and config that already exists.*/
- SD3.usart = (AT91PS_USART)AT91C_BASE_DBGU;
+ SDDBG.usart = (AT91PS_USART)AT91C_BASE_DBGU;
AT91C_BASE_PIOA->PIO_PDR = SAM7_DBGU_RX | SAM7_DBGU_TX;
AT91C_BASE_PIOA->PIO_ASR = SAM7_DBGU_RX | SAM7_DBGU_TX;
AT91C_BASE_PIOA->PIO_PPUDR = SAM7_DBGU_RX | SAM7_DBGU_TX;
@@ -334,6 +391,16 @@ void sd_lld_start(SerialDriver *sdp, const SerialConfig *config) { AIC_EnableIT(AT91C_ID_US1);
}
#endif
+#if (SAM7_PLATFORM == SAM7A3)
+#if USE_SAM7_USART2
+ if (&SD3 == sdp) {
+ /* Starts the clock and clears possible sources of immediate interrupts.*/
+ AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_US2);
+ /* Enables associated interrupt vector.*/
+ AIC_EnableIT(AT91C_ID_US2);
+ }
+#endif
+#endif /* (SAM7_PLATFORM == SAM7A3) */
/* Note - no explicit start for SD3 (DBGU_UART) since it's not included
in the AIC or PMC.*/
}
@@ -368,7 +435,7 @@ void sd_lld_stop(SerialDriver *sdp) { }
#endif
#if USE_SAM7_DBGU_UART
- if (&SD3 == sdp) {
+ if (&SDDBG == sdp) {
AT91C_BASE_DBGU->DBGU_IDR = 0xFFFFFFFF;
return;
}
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