Mirrors_Framework/nuttx
1
0
Fork 0
mirror of https://github.com/apache/nuttx.git synced 2026-06-08 10:32:47 +08:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

Updated README and comments

Browse Source
This commit is contained in:
Gregory Nutt
2014-05-10 11:36:20 -06:00
parent fa7c79712e
commit d9a20861a6
1 changed files with 10 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files
arch/arm/src/stm32/stm32_i2c.c
+10 -8
View File
@@ -1125,6 +1125,7 @@ static inline uint32_t stm32_i2c_disablefsmc(FAR struct stm32_i2c_priv_s *priv)
regval = ret & ~RCC_AHBENR_FSMCEN;
putreg32(regval, STM32_RCC_AHBENR);
}
return ret;
}
@@ -1581,7 +1582,8 @@ static int stm32_i2c_setaddress(FAR struct i2c_dev_s *dev, int addr, int nbits)
*
************************************************************************************/
static int stm32_i2c_process(FAR struct i2c_dev_s *dev, FAR struct i2c_msg_s *msgs, int count)
static int stm32_i2c_process(FAR struct i2c_dev_s *dev, FAR struct i2c_msg_s *msgs,
int count)
{
struct stm32_i2c_inst_s *inst = (struct stm32_i2c_inst_s *)dev;
FAR struct stm32_i2c_priv_s *priv = inst->priv;
@@ -1828,14 +1830,14 @@ static int stm32_i2c_writeread(FAR struct i2c_dev_s *dev,
const uint8_t *wbuffer, int wbuflen,
uint8_t *buffer, int buflen)
{
stm32_i2c_sem_wait(dev); /* ensure that address or flags don't change meanwhile */
stm32_i2c_sem_wait(dev); /* Ensure that address or flags don't change meanwhile */
struct i2c_msg_s msgv[2] =
{
{
.addr = ((struct stm32_i2c_inst_s *)dev)->address,
.flags = ((struct stm32_i2c_inst_s *)dev)->flags,
.buffer = (uint8_t *)wbuffer, /* this is really ugly, sorry const ... */
.buffer = (uint8_t *)wbuffer, /* This is really ugly, sorry const ... */
.length = wbuflen
},
{
@@ -1862,7 +1864,7 @@ static int stm32_i2c_writeread(FAR struct i2c_dev_s *dev,
static int stm32_i2c_transfer(FAR struct i2c_dev_s *dev, FAR struct i2c_msg_s *msgs,
int count)
{
stm32_i2c_sem_wait(dev); /* ensure that address or flags don't change meanwhile */
stm32_i2c_sem_wait(dev); /* Ensure that address or flags don't change meanwhile */
return stm32_i2c_process(dev, msgs, count);
}
#endif
@@ -1881,8 +1883,8 @@ static int stm32_i2c_transfer(FAR struct i2c_dev_s *dev, FAR struct i2c_msg_s *m
FAR struct i2c_dev_s *up_i2cinitialize(int port)
{
struct stm32_i2c_priv_s * priv = NULL; /* private data of device with multiple instances */
struct stm32_i2c_inst_s * inst = NULL; /* device, single instance */
struct stm32_i2c_priv_s * priv = NULL; /* Private data of device with multiple instances */
struct stm32_i2c_inst_s * inst = NULL; /* Eevice, single instance */
int irqs;
#if STM32_PCLK1_FREQUENCY < 4000000
@@ -1932,7 +1934,7 @@ FAR struct i2c_dev_s *up_i2cinitialize(int port)
inst->address = 0;
inst->flags = 0;
/* Init private data for the first time, increment refs count,
/* Initialize private data for the first time, increment reference count,
* power-up hardware and configure GPIOs.
*/
@@ -1962,7 +1964,7 @@ int up_i2cuninitialize(FAR struct i2c_dev_s * dev)
ASSERT(dev);
/* Decrement refs and check for underflow */
/* Decrement reference count and check for underflow */
if (((struct stm32_i2c_inst_s *)dev)->priv->refs == 0)
{