Mercurial > ~darius > hgwebdir.cgi > stm32temp
changeset 15:b12881051261
Use corrected delay() routine.
Add note about timing oddities (but it works, so..)
| author | Daniel O'Connor <darius@dons.net.au> |
|---|---|
| date | Wed, 14 Nov 2012 12:24:44 +1030 |
| parents | 891841f5f785 |
| children | db6011aa94d6 |
| files | 1wire-config.h |
| diffstat | 1 files changed, 30 insertions(+), 12 deletions(-) [+] |
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--- a/1wire-config.h Wed Nov 14 12:24:21 2012 +1030 +++ b/1wire-config.h Wed Nov 14 12:24:44 2012 +1030 @@ -35,7 +35,7 @@ */ #include "stm32f10x.h" /* GPIO* */ -#include "hw.h" /* For _usleep16() */ +#include "delay.h" /* Fudge AVR stuff for ARM */ #define PROGMEM @@ -81,17 +81,35 @@ GPIO_Init(GPIOE, &GPIO_InitStructure); \ } while (0) -#define OWDELAY_A _usleep16(6) /* 6 usec */ -#define OWDELAY_B _usleep16(64) /* 64 usec */ -#define OWDELAY_C _usleep16(60) /* 60 usec */ -#define OWDELAY_D _usleep16(10) /* 10 usec */ -#define OWDELAY_E _usleep16(9) /* 9 usec */ -#define OWDELAY_F _usleep16(55) /* 55 usec */ -#define OWDELAY_G /* 0 usec */ -#define OWDELAY_H _usleep16(480) /* 480 usec */ -#define OWDELAY_I _usleep16(70) /* 70 usec */ -#define OWDELAY_J _usleep16(410) /* 410 usec */ - +#if 0 +#define OWDELAY_A delay(6) /* 6 usec */ +#define OWDELAY_B delay(64) /* 64 usec */ +#define OWDELAY_C delay(60) /* 60 usec */ +#define OWDELAY_D delay(10) /* 10 usec */ +#define OWDELAY_E delay(9) /* 9 usec */ +#define OWDELAY_F delay(55) /* 55 usec */ +#define OWDELAY_G /* 0 usec */ +#define OWDELAY_H delay(480) /* 480 usec */ +#define OWDELAY_I delay(70) /* 70 usec */ +#define OWDELAY_J delay(410) /* 410 usec */ +#else +/* As measured by the cro delay() is correct, but the code does not work and I don't understand why. + * We need to use delays 2/3 the expected amount. + * Possibly due to use of GPIO_Init(), however the STM32 lib doesn't seem to have a function to + * just set the GPIO mode. + */ +#define OWDELAY_A delay(4) /* 6 usec */ +#define OWDELAY_B delay(43) /* 64 usec */ +#define OWDELAY_C delay(40) /* 60 usec */ +#define OWDELAY_D delay(7) /* 10 usec */ +#define OWDELAY_E delay(6) /* 9 usec */ +#define OWDELAY_F delay(37) /* 55 usec */ +#define OWDELAY_G /* 0 usec */ +#define OWDELAY_H delay(320) /* 480 usec */ +#define OWDELAY_I delay(47) /* 70 usec */ +#define OWDELAY_J delay(273) /* 410 usec */ +#endif +//#define OW_DEBUG #ifdef OW_DEBUG #define OWPUTS(x) puts(x) #define OWPUTSP(x) puts(x)