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uart_ow: convert static const int MRAA_UART_OW_ROMCODE_SIZE to #define

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This is needed so that this value can be used in all places in C (and
C++) code.  Unlike C++ you can't always use a static const int
variable to declare an array size for example.  Trying to do so will
yield compiler errors.

In addition, during the declaration of the uart_ow_context, replace a
hardcoded '8' with this macro.  Originally, the '8' was hardcoded for
this very reason.

Signed-off-by: Jon Trulson <jtrulson@ics.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This commit is contained in:
Jon Trulson
2016-09-09 17:02:43 -06:00
committed by Brendan Le Foll
parent 045ceb084f
commit 590f733ff9
1 changed files with 4 additions and 4 deletions
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8
api/mraa/uart_ow.h
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@@ -64,19 +64,19 @@ extern "C" {
#include "common.h"
#include "uart.h"
/* 8 bytes (64 bits) for a device rom code */
#define MRAA_UART_OW_ROMCODE_SIZE 8
/* for now, we simply use the normal MRAA UART context */
typedef struct _mraa_uart_ow {
mraa_uart_context uart;
/* search state */
unsigned char ROM_NO[8]; /* 8 byte (64b) rom code */
unsigned char ROM_NO[MRAA_UART_OW_ROMCODE_SIZE]; /* 8 byte (64b) rom code */
int LastDiscrepancy;
int LastFamilyDiscrepancy;
mraa_boolean_t LastDeviceFlag;
} *mraa_uart_ow_context;
/* 8 bytes (64 bits) for a device rom code */
static const int MRAA_UART_OW_ROMCODE_SIZE = 8;
/**
* UART One Wire ROM related Command bytes
*/