bstanwell/ch32v20x-examples
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V1.9

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This commit is contained in:
qiyongshuang
2023-12-01 10:33:09 +08:00
parent de6d68c654
commit ec059e0b18
395 changed files with 37947 additions and 28760 deletions
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EVT/EXAM/BLE/Direct_Test_Mode/APP/buf.c
+68 -13
View File
@@ -18,6 +18,18 @@
#else
#define SIMPLE_BUF_DBG(...)
#endif
/*********************************************************************
* @fn simple_buf_create
*
* @brief Create a simple_buf structure object.
*
* @param buf - defined simple_buf structural object.
* buf_pool - a pointer to the buffer where data is stored.
* pool_size - the size of the buffer.
*
* @return none
*/
struct simple_buf *simple_buf_create(struct simple_buf *buf,
uint8_t *buf_pool, uint16_t pool_size)
{
@@ -29,13 +41,24 @@ struct simple_buf *simple_buf_create(struct simple_buf *buf,
return buf;
}
/*********************************************************************
* @fn simple_buf_add
*
* @brief Add data to the buf object.
*
* @param buf - defined simple_buf structural object.
* len - length of the data to be added.
*
* @return none
*/
void *simple_buf_add(struct simple_buf *buf, size_t len)
{
uint8_t *tail = buf->data + buf->len;
uint8_t *tail = buf->data + buf->len;
SIMPLE_BUF_DBG("buf %p add len %ld\n", buf, len);
if((buf->size - (buf->data - buf->__buf) - buf->len) < len) {
if((buf->size - (buf->data - buf->__buf) - buf->len) < len)
{
SIMPLE_BUF_DBG("simple_buf_add: no memory\n");
while(1);
}
@@ -45,39 +68,71 @@ void *simple_buf_add(struct simple_buf *buf, size_t len)
return tail;
}
/*********************************************************************
* @fn simple_buf_pull
*
* @brief pull data from the buf object.
*
* @param buf - defined simple_buf structural object.
* len - The length of data to be retrieved.
*
* @return none
*/
void *simple_buf_pull(struct simple_buf *buf, size_t len)
{
void *data = buf->data;
void *data = buf->data;
SIMPLE_BUF_DBG("buf %p pull len %ld\n", buf, len);
if(buf->len < len) {
if(buf->len < len)
{
SIMPLE_BUF_DBG("simple_buf_pull: no data\n");
while(1);
}
buf->len -= len;
buf->data += len;
buf->len -= len;
buf->data += len;
return data;
return data;
}
/*********************************************************************
* @fn simple_buf_add_mem
*
* @brief Add a segment of memory data to the buf object.
*
* @param buf - defined simple_buf structural object.
* mem - a pointer to the memory data to be added.
* len - the length of the data to be added.
*
* @return The function returns a pointer to the starting position of the added data.
*/
void *simple_buf_add_mem(struct simple_buf *buf, const void *mem,
size_t len)
size_t len)
{
SIMPLE_BUF_DBG("buf %p add len %ld\n", buf, len);
return memcpy(simple_buf_add(buf, len), mem, len);
return memcpy(simple_buf_add(buf, len), mem, len);
}
/*********************************************************************
* @fn simple_buf_add_u8
*
* @brief Add an 8-bit unsigned integer to the buf object.
*
* @param buf - defined simple_buf structural object.
* val - the 8-bit unsigned integer to be added.
*
* @return The function returns a pointer to the starting position of the added data.
*/
uint8_t *simple_buf_add_u8(struct simple_buf *buf, uint8_t val)
{
uint8_t *u8;
uint8_t *u8;
SIMPLE_BUF_DBG("buf %p add val 0x%02x\n", buf, val);
u8 = simple_buf_add(buf, 1);
*u8 = val;
u8 = simple_buf_add(buf, 1);
*u8 = val;
return u8;
return u8;
}