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Update a README and some comments.

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This commit is contained in:
Gregory Nutt 2017-04-29 15:53:23 -06:00
parent f0bbe56620
commit 84c887f48c
2 changed files with 9 additions and 28 deletions
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30
configs/nucleo-f072rb/README.txt
View File

@ -17,32 +17,12 @@ Contents
Status
======
2017-04-27: There are many problems. On start up, I have to reset
several times before I get NSH prompt (or parts of it). Apparently the
STM32 is either hanging (perhaps in clockconfig()) or perhaps it has
taken a hard fault before it is able to generate debug output?
2017-04-28: After struggling with some clock configuration and FLASH wait
state issues, the board now boots and the basic NSH configurations works
without problem.
There are many hardfaults during initial serial output. This change
seems to eliminate those hardfaults:
@@ -2163,7 +2163,7 @@ static void stm32f0serial_txint(FAR struct uart_dev_s *dev, bool enable)
* interrupts disabled (note this may recurse).
*/
- uart_xmitchars(dev);
+// uart_xmitchars(dev);
#endif
}
else
Which implies that the hardfaults are due to runaway recursion in the
serial driver? This suggest some error in either determining when there
is TX data available or in disabling TX interrupts.
But this not a solution. Even without the hard faults, it may hang
attempting to output the NSH greeting and prompt or hang unable to
receive input. These symptoms suggest some issue with TX and RX
interrupt handling.
A USB device driver was added along with support for clocking from the
HSI48. That driver remains untested.
Nucleo-64 Boards
================

7
include/nuttx/spi/spi.h
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@ -432,9 +432,10 @@
#define SPIDEVID_TYPE (devid) (((uint32_t)(devid) >> 16) & 0xffff)
#define SPIDEVID_INDEX(devid) ((uint32_t)(devid) & 0xffff)
/* These are replacement definitions for the currently used SPI device indexes.
* The argument, n, is the instance number. This should be zero is there is
* only one instance of the SPI device on the bus.
/* These are standard definitions for the defined SPI device IDs. The index
* argument, n, is the instance number. This should be zero if there is
* only one instance of the SPI device on the SPI bus. Indices greater than
* zero discriminate the additional devices of the same type on the SPI bus.
*/
#define SPIDEV_NONE(n) SPIDEV_ID(SPIDEVTYPE_NONE, (n))