Rename CLOCK_FREQ macro to CPU_FREQ: now clock frequency has to be set in the makefile.

[bertos.git] / bertos / cpu / avr / drv / i2c_avr.c

diff --git a/bertos/cpu/avr/drv/i2c_avr.c b/bertos/cpu/avr/drv/i2c_avr.c
index 2681bb75cdab39144fa33f1e8bdd00e80eab12cd..7425240305cebea0ea6ca383111c88305934b758 100644 (file)
--- a/bertos/cpu/avr/drv/i2c_avr.c
+++ b/bertos/cpu/avr/drv/i2c_avr.c
@@ -38,7 +38,7 @@
  * \author Bernie Innocenti <bernie@codewiz.org>
  */
 
-#include "hw/hw_cpu.h"  /* CLOCK_FREQ */
+#include <hw/hw_cpufreq.h>  /* CPU_FREQ */
 
 #include "cfg/cfg_i2c.h"
 
@@ -237,7 +237,7 @@ void i2c_builtin_init(void)
 
                /*
                 * Set speed:
-                * F = CLOCK_FREQ / (16 + 2*TWBR * 4^TWPS)
+                * F = CPU_FREQ / (16 + 2*TWBR * 4^TWPS)
                 */
                #ifndef CONFIG_I2C_FREQ
                        #warning Using default value of 300000L for CONFIG_I2C_FREQ
@@ -245,7 +245,7 @@ void i2c_builtin_init(void)
                #endif
                #define TWI_PRESC 1       /* 4 ^ TWPS */
 
-               TWBR = (CLOCK_FREQ / (2 * CONFIG_I2C_FREQ * TWI_PRESC)) - (8 / TWI_PRESC);
+               TWBR = (CPU_FREQ / (2 * CONFIG_I2C_FREQ * TWI_PRESC)) - (8 / TWI_PRESC);
                TWSR = 0;
                TWCR = BV(TWEN);
        );