altos/telelco-v2.0: Fix button names and pin mappings. Add drag LED.

[fw/altos] / src / avr / ao_spi_slave.c

diff --git a/src/avr/ao_spi_slave.c b/src/avr/ao_spi_slave.c
index a400b8a0a929f0485b8d8da894f43c17ec098f79..3504739d683d35b9c2e4334917f22be875b61d34 100644 (file)
--- a/src/avr/ao_spi_slave.c
+++ b/src/avr/ao_spi_slave.c
@@ -3,7 +3,8 @@
  *
  * 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.
+ * 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
@@ -18,22 +19,24 @@
 #include "ao.h"
 
 uint8_t
-ao_spi_slave_recv(uint8_t *buf, uint8_t len)
+ao_spi_slave_recv(void *buf, uint16_t len)
 {
+       uint8_t *b = buf;
        while (len--) {
                while (!(SPSR & (1 << SPIF)))
                        if ((PINB & (1 << PINB0)))
                                return 0;
-               *buf++ = SPDR;
+               *b++ = SPDR;
        }
        return 1;
 }
 
 void
-ao_spi_slave_send(uint8_t *buf, uint8_t len)
+ao_spi_slave_send(void *buf, uint16_t len)
 {
+       uint8_t *b = buf;
        while (len--) {
-               SPDR = *buf++;
+               SPDR = *b++;
                while (!(SPSR & (1 << SPIF)))
                        if ((PINB & (1 << PINB0)))
                                return;