LPC2: add debug.

git-svn-id: https://src.develer.com/svnoss/bertos/trunk@3368 38d2e660-2303-0410-9eaa-f027e97ec537

diff --git a/bertos/cpu/arm/drv/kdebug_arm.c b/bertos/cpu/arm/drv/kdebug_arm.c
index 9e16ba225a7a4edf8f0419b6581d251a4a507fbf..5ec3cded9c8a093ce657fcd72954f057ec4e898b 100644 (file)
--- a/bertos/cpu/arm/drv/kdebug_arm.c
+++ b/bertos/cpu/arm/drv/kdebug_arm.c
@@ -41,6 +41,8 @@
 
 #if CPU_ARM_AT91
        #include "kdebug_at91.c"
+#elif CPU_ARM_LPC2
+       #include "kdebug_lpc2.c"
 /*#elif  Add other ARM families here */
 #else
        #error Unknown CPU

diff --git a/bertos/cpu/arm/drv/kdebug_lpc2.c b/bertos/cpu/arm/drv/kdebug_lpc2.c
new file mode 100644 (file)
index 0000000..0de6fb3
--- /dev/null
+++ b/bertos/cpu/arm/drv/kdebug_lpc2.c
@@ -0,0 +1,92 @@
+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2010 Develer S.r.l. (http://www.develer.com/)
+ *
+ * -->
+ *
+ * \brief ARM debug support (implementation).
+ *
+ * \author Francesco Sacchi <batt@develer.com>
+ */
+
+#include <hw/hw_cpufreq.h>     /* for CPU_FREQ */
+#include "hw/hw_ser.h"     /* Required for bus macros overrides */
+
+#include "cfg/cfg_debug.h"
+#include <cfg/macros.h> /* for BV(), DIV_ROUND */
+
+#include <io/lpc23xx.h>
+
+#if CONFIG_KDEBUG_PORT == 0
+       #define KDBG_WAIT_READY()     while (!(U0LSR & BV(5))) {}
+       #define KDBG_WAIT_TXDONE()    while (!(U0LSR & BV(6))) {}
+
+       #define KDBG_WRITE_CHAR(c)    do { U0THR = (c); } while(0)
+
+       #define KDBG_MASK_IRQ(old)    do { \
+               (old) = U0IER; \
+               U0IER &= ~BV(1); \
+       } while(0)
+
+       #define KDBG_RESTORE_IRQ(old) do { \
+               KDBG_WAIT_TXDONE(); \
+               U0IER = (old); \
+       } while(0)
+
+       typedef uint32_t kdbg_irqsave_t;
+
+#else
+       #error CONFIG_KDEBUG_PORT should be 0
+#endif
+
+
+INLINE void kdbg_hw_init(void)
+{
+       #if CONFIG_KDEBUG_PORT == 0
+               /* Enable clock for UART0 */
+               PCONP = BV(3);
+               /* Set UART0 clk to CPU_FREQ */
+               PCLKSEL0 &= ~0xC0;
+               PCLKSEL0 |= 0x40;
+               /* Set 8bit, 1 stop bit, no parity, DLAB = 1 (enable divisor modify) */
+               U0LCR = 0x83;
+               U0DLL = DIV_ROUND(CPU_FREQ, 16 * CONFIG_KDEBUG_BAUDRATE) & 0xFF;
+               U0DLM = (DIV_ROUND(CPU_FREQ, 16 * CONFIG_KDEBUG_BAUDRATE) >> 8) & 0xFF;
+               U0FDR = 0x10;
+               /* Assign TX pin to UART0*/
+               PINSEL0 &= ~0x30;
+               PINSEL0 |= 0x10;
+               /* Set 8bit, 1 stop bit, no parity, DLAB = 0 (disable divisor modify) */
+               U0LCR = 0x03;
+               /* Enable transmitter */
+               U0TER = BV(7);
+       #else
+               #error CONFIG_KDEBUG_PORT should be 0
+       #endif /* CONFIG_KDEBUG_PORT == 0 */
+}