git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@261 35acf78f-673a-0410-8e92-d51de3d6d3f4

2 files changed, 272 insertions, 0 deletions

diff --git a/ports/ARMCM3-STM32F103/stm32_serial.c b/ports/ARMCM3-STM32F103/stm32_serial.c
new file mode 100644
index 000000000..87dc70b85
--- /dev/null
+++ b/ports/ARMCM3-STM32F103/stm32_serial.c
@@ -0,0 +1,164 @@
+/*

+    ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.

+

+    This file is part of ChibiOS/RT.

+

+    ChibiOS/RT is free software; you can redistribute it and/or modify

+    it under the terms of the GNU General Public License as published by

+    the Free Software Foundation; either version 3 of the License, or

+    (at your option) any later version.

+

+    ChibiOS/RT is distributed in the hope that it will be useful,

+    but WITHOUT ANY WARRANTY; without even the implied warranty of

+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

+    GNU General Public License for more details.

+

+    You should have received a copy of the GNU General Public License

+    along with this program.  If not, see <http://www.gnu.org/licenses/>.

+*/

+

+#include <ch.h>

+

+#include "board.h"

+#include "stm32_serial.h"

+

+#ifdef USE_USART1

+FullDuplexDriver COM1;

+static uint8_t ib1[SERIAL_BUFFERS_SIZE];

+static uint8_t ob1[SERIAL_BUFFERS_SIZE];

+#endif

+

+#ifdef USE_USART2

+FullDuplexDriver COM2;

+static uint8_t ib2[SERIAL_BUFFERS_SIZE];

+static uint8_t ob2[SERIAL_BUFFERS_SIZE];

+#endif

+

+#ifdef USE_USART3

+FullDuplexDriver COM3;

+static uint8_t ib3[SERIAL_BUFFERS_SIZE];

+static uint8_t ob3[SERIAL_BUFFERS_SIZE];

+#endif

+

+static void SetError(uint16_t sr, FullDuplexDriver *com) {

+  dflags_t sts = 0;

+

+  if (sr & SR_ORE)

+    sts |= SD_OVERRUN_ERROR;

+  if (sr & SR_PE)

+    sts |= SD_PARITY_ERROR;

+  if (sr & SR_FE)

+    sts |= SD_FRAMING_ERROR;

+  if (sr & SR_LBD)

+    sts |= SD_BREAK_DETECTED;

+  chFDDAddFlagsI(com, sts);

+}

+

+static void ServeInterrupt(USART_TypeDef *u, FullDuplexDriver *com) {

+}

+

+#ifdef USE_USART1

+/*

+ * USART1 IRQ service routine.

+ */

+void VectorD4(void) {

+

+  chSysIRQEnterI();

+  ServeInterrupt(USART1, &COM1);

+  chSysIRQExitI();

+}

+

+/*

+ * Invoked by the high driver when one or more bytes are inserted in the

+ * output queue.

+ */

+static void OutNotify1(void) {

+

+  USART1->CR1 |= CR1_TXEIE;

+}

+#endif

+

+#ifdef USE_USART2

+/*

+ * USART2 IRQ service routine.

+ */

+void VectorD8(void) {

+

+  chSysIRQEnterI();

+  ServeInterrupt(USART2, &COM2);

+  chSysIRQExitI();

+}

+

+/*

+ * Invoked by the high driver when one or more bytes are inserted in the

+ * output queue.

+ */

+static void OutNotify2(void) {

+

+  USART2->CR1 |= CR1_TXEIE;

+}

+#endif

+

+#ifdef USE_USART3

+/*

+ * USART3 IRQ service routine.

+ */

+void VectorDC(void) {

+

+  chSysIRQEnterI();

+  ServeInterrupt(USART3, &COM3);

+  chSysIRQExitI();

+}

+

+/*

+ * Invoked by the high driver when one or more bytes are inserted in the

+ * output queue.

+ */

+static void OutNotify3(void) {

+

+  USART3->CR1 |= CR1_TXEIE;

+}

+#endif

+

+/*

+ * USART setup, must be invoked with interrupts disabled.

+ * NOTE: Does not reset I/O queues.

+ */

+void SetUSARTI(USART_TypeDef *u, uint32_t speed, uint16_t cr1,

+               uint16_t cr2, uint16_t cr3) {

+

+  /*

+   * Baud rate setting.

+   */

+  if (u == USART1)

+    u->BRR = APB2CLK / speed;

+  else

+    u->BRR = APB1CLK / speed;

+

+  /*

+   * Note that some bits are enforced.

+   */

+  u->CR1 = cr1 | CR1_UE | CR1_PEIE | CR1_RXNEIE | CR1_TE | CR1_RE;

+  u->CR2 = cr2;

+  u->CR3 = cr3 | CR3_EIE;

+}

+

+/*

+ * Serial subsystem initialization.

+ * NOTE: Handshake pins are not switched to their function because they may have

+ *       another use. Enable them externally if needed.

+ */

+void InitSerial(uint32_t prio1, uint32_t prio2, uint32_t prio3) {

+

+  /* I/O queues setup.*/

+#ifdef USE_USART1

+  chFDDInit(&COM1, ib1, sizeof ib1, NULL, ob1, sizeof ob1, OutNotify1);

+#endif

+#ifdef USE_USART2

+  chFDDInit(&COM2, ib2, sizeof ib2, NULL, ob2, sizeof ob2, OutNotify2);

+#endif

+#ifdef USE_USART3

+  chFDDInit(&COM3, ib3, sizeof ib3, NULL, ob3, sizeof ob3, OutNotify3);

+#endif

+

+}

diff --git a/ports/ARMCM3-STM32F103/stm32_serial.h b/ports/ARMCM3-STM32F103/stm32_serial.h
new file mode 100644
index 000000000..0d05c7f12
--- /dev/null
+++ b/ports/ARMCM3-STM32F103/stm32_serial.h
@@ -0,0 +1,108 @@
+/*

+    ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.

+

+    This file is part of ChibiOS/RT.

+

+    ChibiOS/RT is free software; you can redistribute it and/or modify

+    it under the terms of the GNU General Public License as published by

+    the Free Software Foundation; either version 3 of the License, or

+    (at your option) any later version.

+

+    ChibiOS/RT is distributed in the hope that it will be useful,

+    but WITHOUT ANY WARRANTY; without even the implied warranty of

+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

+    GNU General Public License for more details.

+

+    You should have received a copy of the GNU General Public License

+    along with this program.  If not, see <http://www.gnu.org/licenses/>.

+*/

+

+#ifndef _STM32_SERIAL_H_

+#define _STM32_SERIAL_H_

+

+#define USE_USART1

+#define USE_USART2

+#define USE_USART3

+

+/*

+ * Configuration parameter, you can change the depth of the queue buffers

+ * depending on the requirements of your application.

+ */

+#define SERIAL_BUFFERS_SIZE 128

+

+/*

+ * USARTs definitions here, ST headers are not good enough IMHO.

+ */

+#define SR_PE                   (1 << 0)

+#define SR_FE                   (1 << 1)

+#define SR_NE                   (1 << 2)

+#define SR_ORE                  (1 << 3)

+#define SR_IDLE                 (1 << 4)

+#define SR_RXNE                 (1 << 5)

+#define SR_TC                   (1 << 6)

+#define SR_TXE                  (1 << 7)

+#define SR_LBD                  (1 << 8)

+#define SR_CTS                  (1 << 9)

+

+#define CR1_SBK                 (1 << 0)

+#define CR1_RWU                 (1 << 1)

+#define CR1_RE                  (1 << 2)

+#define CR1_TE                  (1 << 3)

+#define CR1_IDLEIE              (1 << 4)

+#define CR1_RXNEIE              (1 << 5)

+#define CR1_TCIE                (1 << 6)

+#define CR1_TXEIE               (1 << 7)

+#define CR1_PEIE                (1 << 8)

+#define CR1_PS                  (1 << 9)

+#define CR1_PCE                 (1 << 10)

+#define CR1_WAKE                (1 << 11)

+#define CR1_M                   (1 << 12)

+#define CR1_UE                  (1 << 13)

+

+#define CR2_ADD_MASK            (15 << 0)

+#define CR2_LBDL                (1 << 5)

+#define CR2_LBDIE               (1 << 6)

+#define CR2_CBCL                (1 << 8)

+#define CR2_CPHA                (1 << 9)

+#define CR2_CPOL                (1 << 10)

+#define CR2_CLKEN               (1 << 11)

+#define CR2_STOP_MASK           (3 << 12)

+#define CR2_STOP1_BITS          (0 << 12

+#define CR2_STOP0P5_BITS        (1 << 12

+#define CR2_STOP2_BITS          (2 << 12

+#define CR2_STOP1P5_BITS        (3 << 12

+#define CR2_LINEN               (1 << 14)

+

+#define CR3_EIE                 (1 << 0)

+#define CR3_IREN                (1 << 1)

+#define CR3_IRLP                (1 << 2)

+#define CR3_HDSEL               (1 << 3)

+#define CR3_NACK                (1 << 4)

+#define CR3_SCEN                (1 << 5)

+#define CR3_DMAR                (1 << 6)

+#define CR3_DMAT                (1 << 7)

+#define CR3_RTSE                (1 << 8)

+#define CR3_CTSE                (1 << 9)

+#define CR3_CTSIE               (1 << 10)

+

+#ifdef USE_USART1

+extern FullDuplexDriver COM1;

+#endif

+#ifdef USE_USART2

+extern FullDuplexDriver COM2;

+#endif

+#ifdef USE_USART3

+extern FullDuplexDriver COM3;

+#endif

+

+#ifdef __cplusplus

+extern "C" {

+#endif

+  void InitSerial(uint32_t prio1, uint32_t prio2, uint32_t prio3);

+  void SetUSARTI(USART_TypeDef *u, uint32_t speed, uint16_t cr1,

+                 uint16_t cr2, uint16_t cr3);

+#ifdef __cplusplus

+}

+#endif

+

+#endif /* _STM32_SERIAL_H_ */