diff options
author | Bdale Garbee <bdale@gag.com> | 2012-09-12 20:01:22 -0600 |
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committer | Bdale Garbee <bdale@gag.com> | 2012-09-12 20:01:22 -0600 |
commit | 3b612efcd1dddc6a3d59012f7ed57754b1f798c2 (patch) | |
tree | 18d50713491ef96c5c127a309f870efb6c33f98d /src/avr/ao_arch_funcs.h | |
parent | e076773c1693e2a62bb828dee71c04c20dbab0a5 (diff) | |
parent | 01eb36408d7e0e826b431fcc1d3b2deb23607e0b (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.h | 82 |
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) |