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authorBdale Garbee <bdale@gag.com>2012-09-12 20:01:22 -0600
committerBdale Garbee <bdale@gag.com>2012-09-12 20:01:22 -0600
commit3b612efcd1dddc6a3d59012f7ed57754b1f798c2 (patch)
tree18d50713491ef96c5c127a309f870efb6c33f98d /src/avr/ao_arch_funcs.h
parente076773c1693e2a62bb828dee71c04c20dbab0a5 (diff)
parent01eb36408d7e0e826b431fcc1d3b2deb23607e0b (diff)
Merge branch 'new-debian' into debian
Conflicts: ChangeLog debian/altos.install debian/changelog debian/control debian/copyright debian/dirs debian/docs debian/menu debian/rules src/Makefile
Diffstat (limited to 'src/avr/ao_arch_funcs.h')
-rw-r--r--src/avr/ao_arch_funcs.h82
1 files changed, 82 insertions, 0 deletions
diff --git a/src/avr/ao_arch_funcs.h b/src/avr/ao_arch_funcs.h
new file mode 100644
index 00000000..792ff744
--- /dev/null
+++ b/src/avr/ao_arch_funcs.h
@@ -0,0 +1,82 @@
+/*
+ * 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.
+ */
+
+/*
+ * ao_spi.c
+ */
+
+extern __xdata uint8_t ao_spi_mutex;
+
+#define ao_spi_get_mask(reg,mask,bus,speed) do { \
+ ao_mutex_get(&ao_spi_mutex); \
+ (reg) &= ~(mask); \
+ } while (0)
+
+#define ao_spi_put_mask(reg,mask,bus) do { \
+ (reg) |= (mask); \
+ ao_mutex_put(&ao_spi_mutex); \
+ } while (0)
+
+#define ao_spi_get_bit(reg,bit,pin,bus,speed) do { \
+ ao_mutex_get(&ao_spi_mutex); \
+ (pin) = 0; \
+ } while (0)
+
+#define ao_spi_put_bit(reg,bit,pin,bus) do { \
+ (pin) = 1; \
+ ao_mutex_put(&ao_spi_mutex); \
+ } while (0)
+
+
+#define ao_gpio_token_paster(x,y) x ## y
+#define ao_gpio_token_evaluator(x,y) ao_gpio_token_paster(x,y)
+
+#define ao_gpio_set(port, bit, pin, v) do { \
+ if (v) \
+ (ao_gpio_token_evaluator(PORT,port)) |= (1 << bit); \
+ else \
+ (ao_gpio_token_evaluator(PORT,port)) &= ~(1 << bit); \
+ } while (0)
+
+/*
+ * The SPI mutex must be held to call either of these
+ * functions -- this mutex covers the entire SPI operation,
+ * from chip select low to chip select high
+ */
+
+#define ao_enable_output(port, bit, pin, v) do { \
+ ao_gpio_set(port, bit, pin, v); \
+ ao_gpio_token_evaluator(DDR,port) |= (1 << bit); \
+ } while (0)
+
+
+void
+ao_spi_send_bus(void __xdata *block, uint16_t len) __reentrant;
+
+void
+ao_spi_recv_bus(void __xdata *block, uint16_t len) __reentrant;
+
+#define ao_spi_send(block, len, bus) ao_spi_send_bus(block, len)
+#define ao_spi_recv(block, len, bus) ao_spi_recv_bus(block, len)
+
+void
+ao_spi_init(void);
+
+#define ao_spi_init_cs(port, mask) do { \
+ SPI_CS_PORT |= (mask); \
+ SPI_CS_DIR |= (mask); \
+ } while (0)