rm48x50: now it has console

bsp/rm48x50/application/application.c

@@ -28,11 +28,14 @@ static rt_uint8_t user_thread_stack[512];
 static struct rt_thread user_thread;
 static void user_thread_entry(void *p)
 {
+    int i;
+
     gioSetDirection(hetPORT1, 0xFFFFFFFF);
-    for(;;)
+
+    for(i = 0; ;i++)
     {
+        rt_kprintf("loop %d\n", i);
         gioSetBit(hetPORT1, 17, gioGetBit(hetPORT1, 17) ^ 1);
-        /* Taggle HET[1] with timer tick */
         /*sciSendByte(scilinREG, 'b');*/
         rt_thread_delay(100);
         /*sciSendByte(scilinREG, 'a');*/

bsp/rm48x50/drivers/board.c

@@ -1,7 +1,7 @@
 /*
  * File      : board.c
  * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2006, RT-Thread Develop Team
+ * COPYRIGHT (C) 2013, RT-Thread Develop Team
  *
  * The license and distribution terms for this file may be
  * found in the file LICENSE in this distribution or at
@@ -9,7 +9,7 @@
  *
  * Change Logs:
  * Date           Author       Notes
- * 2008-12-11     xuxinming    first version
+ * 2013-05-27     Grissiom     port to RM48x50
  */
 
 #include <rtthread.h>
@@ -17,11 +17,12 @@
 
 #include "sys_common.h"
 #include "system.h"
-#include "sci.h"
 #include "rti.h"
 
 #include "board.h"
 
+#include "drv_uart.h"
+
 #define RTI_INT_VEC 6
 
 void rt_timer_handler(int vector, void* param)
@@ -30,17 +31,17 @@ void rt_timer_handler(int vector, void* param)
 	rt_tick_increase();
 }
 
-/**
- * This function will init LPC2478 board
- */
 void rt_hw_board_init(void)
 {
-    sciInit();
     rtiInit();
-    rtiStartCounter(rtiCOUNTER_BLOCK1);
-    rtiEnableNotification(rtiNOTIFICATION_COMPARE3);
 
 	rt_hw_interrupt_install(RTI_INT_VEC, rt_timer_handler, RT_NULL, "tick");
     rt_hw_interrupt_umask(RTI_INT_VEC);
+
+    rtiStartCounter(rtiCOUNTER_BLOCK1);
+    rtiEnableNotification(rtiNOTIFICATION_COMPARE3);
+
+    rt_hw_uart_init();
+    rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
 }
 

bsp/rm48x50/drivers/drv_uart.h

@@ -0,0 +1,6 @@
+#ifndef DRV_UART_H
+#define DRV_UART_H
+
+void rt_hw_uart_init(void);
+
+#endif /* end of include guard: DRV_UART_H */

bsp/rm48x50/drivers/uart.c

@@ -0,0 +1,204 @@
+/*
+ * File      : uart.c
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2013, RT-Thread Develop Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://openlab.rt-thread.com/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2013-05-27     Grissiom     port to RM48x50
+ */
+
+/* welcome, if you open this file, you may want to see uart driver code.
+ * However, TI call it Serial Communication Interface(SCI) and all the low
+ * level API is prefixed by "sci". To avoid messive renaming, I want to keep
+ * with TI and call all the things SCI. You could safely substitude the word
+ * "sci" with "uart". Enjoy. */
+
+#include <rthw.h>
+#include <rtthread.h>
+#include <rtdevice.h>
+
+#include <reg_sci.h>
+
+/* bring from sci.h */
+enum sciIntFlags
+{
+    SCI_FE_INT    = 0x04000000U,  /* framing error */
+    SCI_OE_INT    = 0x02000000U,  /* overrun error */
+    SCI_PE_INT    = 0x01000000U,  /* parity error */
+    SCI_RX_INT    = 0x00000200U,  /* receive buffer ready */
+    SCI_TX_INT    = 0x00000100U,  /* transmit buffer ready */
+    SCI_WAKE_INT  = 0x00000002U,  /* wakeup */
+    SCI_BREAK_INT = 0x00000001U   /* break detect */
+};
+
+/* LIN1 High level interrupt. Change this if you set a different channel in
+ * HALCoGen. */
+#define SCI_INT_VEC 13
+
+#define VCLK_HZ 100000000L
+
+static rt_err_t _configure(struct rt_serial_device *serial, struct serial_configure *cfg)
+{
+    /** - global control 1 */
+    rt_uint32_t gcr1 = (1U << 25U)  /* enable transmit */
+                       | (1U << 24U)  /* enable receive */
+                       | (1U << 5U)   /* internal clock (device has no clock pin) */
+                       | (1U << 1U);  /* asynchronous timing mode */
+    if (cfg->stop_bits == STOP_BITS_2)
+        gcr1 |= (1U << 4U);  /* number of stop bits */
+    else if (cfg->stop_bits != STOP_BITS_1)
+        return -RT_ERROR;
+
+    if (cfg->parity == PARITY_EVEN)
+    {
+        gcr1 |= (1U << 3U) | (1U << 2U);
+    }
+    else if (cfg->parity == PARITY_ODD)
+    {
+        gcr1 |= (0U << 3U) | (1U << 2U);
+    }
+
+    /** - bring SCI out of reset */
+    scilinREG->GCR0 = 1U;
+
+    /** - Disable all interrupts */
+    scilinREG->CLRINT    = 0xFFFFFFFFU;
+    scilinREG->CLRINTLVL = 0xFFFFFFFFU;
+
+    scilinREG->GCR1 = gcr1;
+
+    /** - set baudrate */
+    scilinREG->BRS = VCLK_HZ/16/cfg->baud_rate - 1;  /* baudrate */
+
+    /** - transmission length */
+    scilinREG->FORMAT = cfg->data_bits - 1;  /* length */
+
+    /** - set SCI pins functional mode */
+    scilinREG->FUN = (1U << 2U)  /* tx pin */
+                 | (1U << 1U)  /* rx pin */
+                 | (0U);  /* clk pin */
+
+    /** - set SCI pins default output value */
+    scilinREG->DOUT = (0U << 2U)  /* tx pin */
+                  | (0U << 1U)  /* rx pin */
+                  | (0U);  /* clk pin */
+
+    /** - set SCI pins output direction */
+    scilinREG->DIR = (0U << 2U)  /* tx pin */
+                 | (0U << 1U)  /* rx pin */
+                 | (0U);  /* clk pin */
+
+    /** - set SCI pins open drain enable */
+    scilinREG->ODR = (0U << 2U)  /* tx pin */
+                 | (0U << 1U)  /* rx pin */
+                 | (0U);  /* clk pin */
+
+    /** - set SCI pins pullup/pulldown enable */
+    scilinREG->PD = (0U << 2U)  /* tx pin */
+                | (0U << 1U)  /* rx pin */
+                | (0U);  /* clk pin */
+
+    /** - set SCI pins pullup/pulldown select */
+    scilinREG->PSL = (1U << 2U)  /* tx pin */
+                 | (1U << 1U)  /* rx pin */
+                 | (1U);  /* clk pin */
+
+    /** - set interrupt level */
+    scilinREG->SETINTLVL = (0U << 26U)  /* Framing error */
+                       | (0U << 25U)  /* Overrun error */
+                       | (0U << 24U)  /* Parity error */
+                       | (0U << 9U)  /* Receive */
+                       | (0U << 8U)  /* Transmit */
+                       | (0U << 1U)  /* Wakeup */
+                       | (0U);  /* Break detect */
+
+    /** - set interrupt enable */
+    scilinREG->SETINT = (0U << 26U)  /* Framing error */
+                    | (0U << 25U)  /* Overrun error */
+                    | (0U << 24U)  /* Parity error */
+                    | (1U << 9U)  /* Receive */
+                    | (0U << 1U)  /* Wakeup */
+                    | (0U);  /* Break detect */
+
+    /** - Finaly start SCILIN */
+    scilinREG->GCR1 |= (1U << 7U);
+
+    return RT_EOK;
+}
+
+static rt_err_t _control(struct rt_serial_device *serial, int cmd, void *arg)
+{
+    sciBASE_t *sci = (sciBASE_t*)serial->parent.user_data;
+
+    switch (cmd)
+    {
+    case RT_DEVICE_CTRL_CLR_INT:
+        /* disable rx irq */
+        sci->CLRINT = SCI_RX_INT;
+        break;
+    case RT_DEVICE_CTRL_SET_INT:
+        /* enable rx irq */
+        sci->SETINT = SCI_RX_INT;
+        break;
+    }
+
+    return RT_EOK;
+}
+
+static int _putc(struct rt_serial_device *serial, char c)
+{
+    sciBASE_t *sci = (sciBASE_t*)serial->parent.user_data;
+    while ((sci->FLR & SCI_TX_INT) == 0U)
+        ;
+    sci->TD = c;
+    return 1;
+}
+
+static int _getc(struct rt_serial_device *serial)
+{
+    sciBASE_t *sci = (sciBASE_t*)serial->parent.user_data;
+    if (sci->FLR & (1<<9))
+        return (sci->RD & 0x000000FFU);
+    else
+        return -1;
+}
+
+static const struct rt_uart_ops _sci_ops =
+{
+    _configure,
+    _control,
+    _putc,
+    _getc,
+};
+
+static struct rt_serial_device _sci2_serial;
+static struct serial_ringbuffer _sci2_int_rx;
+
+void rt_hw_uart_init(void)
+{
+    struct serial_configure config;
+
+    /* fake configuration */
+    config.baud_rate = BAUD_RATE_115200;
+    config.bit_order = BIT_ORDER_LSB;
+    config.data_bits = DATA_BITS_8;
+    config.parity    = PARITY_NONE;
+    config.stop_bits = STOP_BITS_1;
+    config.invert    = NRZ_NORMAL;
+
+    _sci2_serial.ops    = &_sci_ops;
+    _sci2_serial.int_rx = &_sci2_int_rx;
+    _sci2_serial.config = config;
+
+    rt_hw_serial_register(&_sci2_serial, "sci2",
+                          RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM,
+                          (void*)scilinREG);
+
+    rt_hw_interrupt_install(SCI_INT_VEC, rt_hw_serial_isr, &_sci2_serial, "sci2");
+    rt_hw_interrupt_umask(SCI_INT_VEC);
+}

bsp/rm48x50/rtconfig.h

@@ -79,7 +79,7 @@
 // <integer name="RT_CONSOLEBUF_SIZE" description="The buffer size for console output" default="128" />
 #define RT_CONSOLEBUF_SIZE	128
 // <string name="RT_CONSOLE_DEVICE_NAME" description="The device name for console" default="uart" />
-#define RT_CONSOLE_DEVICE_NAME	"uart0"
+#define RT_CONSOLE_DEVICE_NAME	"sci2"
 // </section>
 
 // <bool name="RT_USING_COMPONENTS_INIT" description="Using RT-Thread components initialization" default="true" />