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Make it a square wave please

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This commit is contained in:
Christophe De Wagter
2011-11-24 16:56:08 +01:00
parent 0d0605c733
commit 0bbc30a4c7
1 changed files with 3 additions and 3 deletions
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sw/airborne/arch/stm32/mcu_periph/i2c_arch.rewritten.c
+3 -3
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@@ -1232,7 +1232,7 @@ void i2c_setbitrate(struct i2c_periph *periph, int bitrate)
bitrate = 3000;
// 36MHz, fast scl: 2counts low 1 count high -> / 3:
devider = 12000 / (bitrate/1000);
devider = 18000 / (bitrate/1000);
// never allow faster than 600kbps
if (devider < 20)
@@ -1256,8 +1256,8 @@ void i2c_setbitrate(struct i2c_periph *periph, int bitrate)
// 1)
regs->CR2 = 0x0324;
// 2)
regs->CCR = 0x8000 + devider;
//regs->CCR = 0x0000 + devider;
//regs->CCR = 0x8000 + devider;
regs->CCR = 0x0000 + devider;
// 3)
regs->TRISE = risetime;