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util: mark all read-only arguments as const

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This commit is contained in:
Matthias Ringwald 2017-04-06 14:13:15 +02:00
parent 09ac355c8a
commit 5222912b1f
2 changed files with 10 additions and 10 deletions
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10
src/btstack_util.c
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@ -58,7 +58,7 @@
* @param b * @param b
* @return 0 if equal * @return 0 if equal
*/ */
int bd_addr_cmp(bd_addr_t a, bd_addr_t b){ int bd_addr_cmp(const bd_addr_t a, const bd_addr_t b){
return memcmp(a,b, BD_ADDR_LEN); return memcmp(a,b, BD_ADDR_LEN);
} }
@ -67,7 +67,7 @@ int bd_addr_cmp(bd_addr_t a, bd_addr_t b){
* @param dest * @param dest
* @param src * @param src
*/ */
void bd_addr_copy(bd_addr_t dest, bd_addr_t src){ void bd_addr_copy(bd_addr_t dest, const bd_addr_t src){
memcpy(dest,src,BD_ADDR_LEN); memcpy(dest,src,BD_ADDR_LEN);
} }
@ -261,12 +261,12 @@ void uuid_add_bluetooth_prefix(uint8_t *uuid, uint32_t shortUUID){
big_endian_store_32(uuid, 0, shortUUID); big_endian_store_32(uuid, 0, shortUUID);
} }
int uuid_has_bluetooth_prefix(uint8_t * uuid128){ int uuid_has_bluetooth_prefix(const uint8_t * uuid128){
return memcmp(&uuid128[4], &bluetooth_base_uuid[4], 12) == 0; return memcmp(&uuid128[4], &bluetooth_base_uuid[4], 12) == 0;
} }
static char uuid128_to_str_buffer[32+4+1]; static char uuid128_to_str_buffer[32+4+1];
char * uuid128_to_str(uint8_t * uuid){ char * uuid128_to_str(const uint8_t * uuid){
int i; int i;
int j = 0; int j = 0;
// after 4, 6, 8, and 10 bytes = XYXYXYXY-XYXY-XYXY-XYXY-XYXYXYXYXYXY, there's a dash // after 4, 6, 8, and 10 bytes = XYXYXYXY-XYXY-XYXY-XYXY-XYXYXYXYXYXY, there's a dash
@ -283,7 +283,7 @@ char * uuid128_to_str(uint8_t * uuid){
} }
static char bd_addr_to_str_buffer[6*3]; // 12:45:78:01:34:67\0 static char bd_addr_to_str_buffer[6*3]; // 12:45:78:01:34:67\0
char * bd_addr_to_str(bd_addr_t addr){ char * bd_addr_to_str(const bd_addr_t addr){
// orig code // orig code
// sprintf(bd_addr_to_str_buffer, "%02x:%02x:%02x:%02x:%02x:%02x", addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); // sprintf(bd_addr_to_str_buffer, "%02x:%02x:%02x:%02x:%02x:%02x", addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
// sprintf-free code // sprintf-free code

10
src/btstack_util.h
View File

@ -196,14 +196,14 @@ int nibble_for_char(char c);
* @param b * @param b
* @return true if equal * @return true if equal
*/ */
int bd_addr_cmp(bd_addr_t a, bd_addr_t b); int bd_addr_cmp(const bd_addr_t a, const bd_addr_t b);
/** /**
* @brief Copy Bluetooth address * @brief Copy Bluetooth address
* @param dest * @param dest
* @param src * @param src
*/ */
void bd_addr_copy(bd_addr_t dest, bd_addr_t src); void bd_addr_copy(bd_addr_t dest, const bd_addr_t src);
/** /**
* @brief Use printf to write hexdump as single line of data * @brief Use printf to write hexdump as single line of data
@ -215,14 +215,14 @@ void printf_hexdump(const void *data, int size);
* @note uses fixed global buffer * @note uses fixed global buffer
* @return pointer to UUID128 string * @return pointer to UUID128 string
*/ */
char * uuid128_to_str(uint8_t * uuid); char * uuid128_to_str(const uint8_t * uuid);
/** /**
* @brief Create human readable represenationt of Bluetooth address * @brief Create human readable represenationt of Bluetooth address
* @note uses fixed global buffer * @note uses fixed global buffer
* @return pointer to Bluetooth address string * @return pointer to Bluetooth address string
*/ */
char * bd_addr_to_str(bd_addr_t addr); char * bd_addr_to_str(const bd_addr_t addr);
/** /**
* @brief Parse Bluetooth address * @brief Parse Bluetooth address
@ -244,7 +244,7 @@ void uuid_add_bluetooth_prefix(uint8_t * uuid128, uint32_t short_uuid);
* @param uui128 to test * @param uui128 to test
* @return 1 if it can be expressed as UUID32 * @return 1 if it can be expressed as UUID32
*/ */
int uuid_has_bluetooth_prefix(uint8_t * uuid128); int uuid_has_bluetooth_prefix(const uint8_t * uuid128);
/** /**
* @brief Parse unsigned number * @brief Parse unsigned number