From 55a7a31ce3a742feea2ff47f6ec35356ebb0ba06 Mon Sep 17 00:00:00 2001
From: Bertrik Sikken <bertrik@sikken.nl>
Date: Sat, 23 Apr 2011 08:23:07 +0000
Subject: Split off target-specific parts from firmware/drivers/serial.c

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29768 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/target/sh/archos/uart-archos.c | 167 ++++++++++++++++++++++++++++++++
 1 file changed, 167 insertions(+)
 create mode 100644 firmware/target/sh/archos/uart-archos.c

(limited to 'firmware/target/sh/archos')

diff --git a/firmware/target/sh/archos/uart-archos.c b/firmware/target/sh/archos/uart-archos.c
new file mode 100644
index 0000000000..14fea943b3
--- /dev/null
+++ b/firmware/target/sh/archos/uart-archos.c
@@ -0,0 +1,167 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 by Alan Korr & Nick Robinson
+ *
+ * This program 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+
+#include "config.h"
+#include "button.h"
+#include "cpu.h"
+#include "system.h"
+#include "kernel.h"
+#include "serial.h"
+
+/* FIX: this doesn't work on iRiver or iPod yet */
+/* iFP7xx has no remote */
+
+/* Received byte identifiers */
+#define PLAY  0xC1
+#define STOP  0xC2
+#define PREV  0xC4
+#define NEXT  0xC8
+#define VOLUP 0xD0
+#define VOLDN 0xE0
+
+void serial_setup (void)
+{
+    /* Set PB10 function to serial Rx */
+    PBCR1 = (PBCR1 & 0xffcf) | 0x0020;
+
+    SMR1 = 0x00;
+    SCR1 = 0;
+    BRR1 = (FREQ/(32*9600))-1;
+    and_b(0, &SSR1); /* The status bits must be read before they are cleared,
+                        so we do an AND operation */
+
+    /* Let the hardware settle. The serial port needs to wait "at least
+       the interval required to transmit or receive one bit" before it
+       can be used. */
+    sleep(1);
+
+    SCR1 = 0x10; /* Enable the receiver, no interrupt */
+}
+
+int tx_rdy(void)
+{
+    /* a dummy */
+    return 1;
+}
+
+int rx_rdy(void)
+{
+    if(SSR1 & SCI_RDRF)
+        return 1;
+    else
+        return 0;
+}
+
+void tx_writec(unsigned char c)
+{
+    /* a dummy */
+    (void)c;
+}
+
+unsigned char rx_readc(void)
+{
+    char tmp;
+    /* Read byte and clear the Rx Full bit */
+    tmp = RDR1;
+    and_b(~SCI_RDRF, &SSR1);
+    return tmp;
+}
+
+
+/* This function returns the received remote control code only if it is
+   received without errors before or after the reception.
+   It therefore returns the received code on the second call after the
+   code has been received. */
+int remote_control_rx(void)
+{
+    static int last_valid_button = BUTTON_NONE;
+    static int last_was_error = false;
+    int btn;
+    int ret = BUTTON_NONE;
+
+    /* Errors? Just clear'em. The receiver stops if we don't */
+    if(SSR1 & (SCI_ORER | SCI_FER | SCI_PER)) {
+        and_b(~(SCI_ORER | SCI_FER | SCI_PER), &SSR1);
+        last_valid_button = BUTTON_NONE;
+        last_was_error = true;
+        return BUTTON_NONE;
+    }
+
+    if(rx_rdy()) {
+        btn = rx_readc();
+
+        if(last_was_error)
+        {
+            last_valid_button = BUTTON_NONE;
+            ret = BUTTON_NONE;
+        }
+        else
+        {
+            switch (btn)
+            {
+                case STOP:
+                    last_valid_button = BUTTON_RC_STOP;
+                    break;
+
+                case PLAY:
+                    last_valid_button = BUTTON_RC_PLAY;
+                    break;
+
+                case VOLUP:
+                    last_valid_button = BUTTON_RC_VOL_UP;
+                    break;
+
+                case VOLDN:
+                    last_valid_button = BUTTON_RC_VOL_DOWN;
+                    break;
+
+                case PREV:
+                    last_valid_button = BUTTON_RC_LEFT;
+                    break;
+
+                case NEXT:
+                    last_valid_button = BUTTON_RC_RIGHT;
+                    break;
+
+                default:
+                    last_valid_button = BUTTON_NONE;
+                    break;
+            }
+        }
+    }
+    else
+    {
+        /* This means that a valid remote control character was received
+           the last time we were called, with no receiver errors either before
+           or after. Then we can assume that there really is a remote control
+           attached, and return the button code. */
+        ret = last_valid_button;
+        last_valid_button = BUTTON_NONE;
+    }
+
+    last_was_error = false;
+
+    return ret;
+}
+
-- 
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