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Merging pull request #63 Improvements to STM32F1 I2C, CAN, RCC, and USB (f107)

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Merge remote-tracking branch 'icd/master'
This commit is contained in:
Piotr Esden-Tempski
2013-01-06 17:52:43 -08:00
parent 70746ccd67 88d4f02081
commit c904c3ae57
20 changed files with 496 additions and 42 deletions
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24
lib/stm32/can.c
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@@ -85,7 +85,8 @@ Initialize the selected CAN peripheral block.
@returns int 0 on success, 1 on initialization failure.
*/
int can_init(u32 canport, bool ttcm, bool abom, bool awum, bool nart,
bool rflm, bool txfp, u32 sjw, u32 ts1, u32 ts2, u32 brp)
bool rflm, bool txfp, u32 sjw, u32 ts1, u32 ts2, u32 brp,
bool loopback, bool silent)
{
u32 wait_ack = 0x00000000;
u32 can_msr_inak_timeout = 0x0000FFFF;
@@ -107,6 +108,9 @@ int can_init(u32 canport, bool ttcm, bool abom, bool awum, bool nart,
if ((CAN_MSR(canport) & CAN_MSR_INAK) != CAN_MSR_INAK)
return 1;
/* clear can timing bits */
CAN_BTR(canport) = 0;
/* Set the automatic bus-off management. */
if (ttcm)
CAN_MCR(canport) |= CAN_MCR_TTCM;
@@ -138,8 +142,19 @@ int can_init(u32 canport, bool ttcm, bool abom, bool awum, bool nart,
else
CAN_MCR(canport) &= ~CAN_MCR_TXFP;
if (silent)
CAN_BTR(canport) |= CAN_BTR_SILM;
else
CAN_BTR(canport) &= ~CAN_BTR_SILM;
if (loopback)
CAN_BTR(canport) |= CAN_BTR_LBKM;
else
CAN_BTR(canport) &= ~CAN_BTR_LBKM;
/* Set bit timings. */
CAN_BTR(canport) = sjw | ts2 | ts1 |
CAN_BTR(canport) |= sjw | ts2 | ts1 |
(u32)(CAN_BTR_BRP_MASK & (brp - 1));
/* Request initialization "leave". */
@@ -456,3 +471,8 @@ void can_receive(u32 canport, u8 fifo, bool release, u32 *id, bool *ext,
if (release)
can_fifo_release(canport, fifo);
}
bool can_available_mailbox(u32 canport)
{
return CAN_TSR(canport) & (CAN_TSR_TME0 | CAN_TSR_TME1 | CAN_TSR_TME2);
}