kaspar/RIOT
1
0
Fork 0
mirror of https://github.com/RIOT-OS/RIOT.git synced 2025-12-25 06:23:53 +01:00
Code Releases Activity

cpu: stm32f1: use periph_common SPI functions

Browse Source
This commit is contained in:
Kaspar Schleiser 2015-08-13 15:20:39 +02:00
parent 336c5300cd
commit 6c185655c8
3 changed files with 12 additions and 41 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
cpu/stm32f1/Makefile.include
View File

@ -3,4 +3,7 @@ export CPU_ARCH = cortex-m3
# use hwtimer compatibility module
USEMODULE += hwtimer_compat
# use common periph functions
USEMODULE += periph_common
include $(RIOTCPU)/Makefile.include.cortexm_common

9
cpu/stm32f1/include/periph_cpu.h
View File

@ -102,6 +102,15 @@ typedef enum {
*/
void gpio_init_af(gpio_t pin, gpio_af_out_t af);
/**
* @brief declare needed generic SPI functions
* @{
*/
#define PERIPH_SPI_NEEDS_TRANSFER_BYTES
#define PERIPH_SPI_NEEDS_TRANSFER_REG
#define PERIPH_SPI_NEEDS_TRANSFER_REGS
/** @} */
#ifdef __cplusplus
}
#endif

41
cpu/stm32f1/periph/spi.c
View File

@ -190,47 +190,6 @@ int spi_transfer_byte(spi_t dev, char out, char *in)
return transferred;
}
int spi_transfer_bytes(spi_t dev, char *out, char *in, unsigned int length)
{
int transferred = 0;
if (out != NULL) {
DEBUG("out*: %p out: %x length: %x\n", out, *out, length);
while (length--) {
int ret = spi_transfer_byte(dev, *(out)++, 0);
if (ret < 0) {
return ret;
}
transferred += ret;
}
}
if (in != NULL) {
while (length--) {
int ret = spi_transfer_byte(dev, 0, in++);
if (ret < 0) {
return ret;
}
transferred += ret;
}
DEBUG("in*: %p in: %x transferred: %x\n", in, *(in-transferred), transferred);
}
DEBUG("sent %x byte(s)\n", transferred);
return transferred;
}
int spi_transfer_reg(spi_t dev, uint8_t reg, char out, char *in)
{
spi_transfer_byte(dev, reg, NULL);
return spi_transfer_byte(dev, out, in);
}
int spi_transfer_regs(spi_t dev, uint8_t reg, char *out, char *in, unsigned int length)
{
spi_transfer_byte(dev, reg, NULL);
return spi_transfer_bytes(dev, out, in, length);
}
void spi_transmission_begin(spi_t dev, char reset_val)
{
/* slave mode not implemented, yet */