cc1111: Hacky pin interrupt support. Only useful for TeleMini v2

This code is designed to support the MS5607 MISO interrupt bits.

Signed-off-by: Keith Packard <keithp@keithp.com>

diff --git a/src/cc1111/ao_exti.c b/src/cc1111/ao_exti.c
new file mode 100644 (file)
index 0000000..537f625
--- /dev/null
+++ b/src/cc1111/ao_exti.c
@@ -0,0 +1,33 @@
+/*
+ * Copyright © 2012 Keith Packard <keithp@keithp.com>
+ *
+ * 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; version 2 of the License.
+ *
+ * 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.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include <ao.h>
+#include <ao_exti.h>
+
+#if HAS_EXTI_0
+__xdata void   (*ao_int_callback)(void);
+
+void
+ao_p0_isr(void) __interrupt(13)
+{
+       if (P0IF && (P0IFG & (AO_MS5607_MISO_MASK))) {
+               (*ao_int_callback)();
+       }
+       P0IFG = 0;
+       P0IF = 0;
+}
+#endif

diff --git a/src/cc1111/ao_exti.h b/src/cc1111/ao_exti.h
new file mode 100644 (file)
index 0000000..00d99a2
--- /dev/null
+++ b/src/cc1111/ao_exti.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright © 2012 Keith Packard <keithp@keithp.com>
+ *
+ * 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; version 2 of the License.
+ *
+ * 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.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#ifndef _AO_EXTI_H_
+#define _AO_EXTI_H_
+
+#define AO_EXTI_MODE_RISING    1
+#define AO_EXTI_MODE_FALLING   2
+#define AO_EXTI_MODE_PULL_UP   4
+#define AO_EXTI_MODE_PULL_DOWN 8
+#define AO_EXTI_PRIORITY_LOW   16
+#define AO_EXTI_PRIORITY_MED   0
+#define AO_EXTI_PRIORITY_HIGH  32
+
+extern void    (*ao_int_callback)(void);
+
+#define ao_exti_setup(gpio, pin, mode, callback) do { \
+               ao_int_callback = callback;           \
+       } while (0)
+
+#define ao_exti_set_mode(gpio, pin, mode) do { \
+       } while (0)
+
+#define ao_exti_set_callback(port, pin, callback) do { \
+               ao_int_callback = callback;             \
+       } while (0)
+
+#define ao_exti_init() do {                    \
+               IEN1 &= IEN1_P0IE;              \
+               PICTL |= PICTL_P0IENL;          \
+       } while (0)
+
+#define ao_exti_enable(port, pin) do {         \
+               P0IFG &= ~(1 << pin);           \
+               P0IF = 0;                       \
+               IEN1 |= IEN1_P0IE;              \
+       } while (0)
+
+#define ao_exti_disable(port, pin) do {                \
+               IEN1 &= ~IEN1_P0IE;             \
+       } while (0)
+
+#endif /* _AO_EXTI_H_ */