RIOT-OS/RIOT
RIOT-OS/RIOT
1
0
Fork 0
mirror of https://github.com/RIOT-OS/RIOT.git synced 2024-12-29 04:50:03 +01:00
Code Releases Activity

cpu/efm32: add DAC support for EFM32 Series1 (VDAC)

Browse Source
This commit is contained in:
Gunar Schorcht 2023-08-15 14:33:47 +02:00
parent 2a4496b32a
commit 3499b822ee
2 changed files with 42 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
cpu/efm32/include/periph_cpu.h
View File

@ -40,6 +40,8 @@
#include "em_rtc.h"
#if defined(_SILICON_LABS_32B_SERIES_0)
#include "em_dac.h"
#elif defined (_SILICON_LABS_32B_SERIES_1) || defined(_SILICON_LABS_32B_SERIES_2)
#include "em_vdac.h"
#endif
#ifdef __cplusplus
@ -90,6 +92,24 @@ typedef struct {
uint8_t dev; /**< device index */
uint8_t index; /**< channel index */
} dac_chan_conf_t;
#elif defined(VDAC_COUNT) && VDAC_COUNT > 0
/**
* @brief DAC device configuration (VDAC configuration of EFM32 Series 1)
*/
typedef struct {
VDAC_TypeDef *dev; /**< DAC device used */
VDAC_Ref_TypeDef ref; /**< DAC voltage reference */
CMU_Clock_TypeDef cmu; /**< the device CMU channel */
} dac_conf_t;
/**
* @brief DAC channel configuration (VDAC configuration of EFM32 Series 1)
*/
typedef struct {
uint8_t dev; /**< device index */
uint8_t index; /**< channel index */
} dac_chan_conf_t;
#endif
/**

22
cpu/efm32/periph/dac.c
View File

@ -20,6 +20,7 @@
*/
#include "cpu.h"
#include "macros/units.h"
#include "periph_conf.h"
#include "periph/dac.h"
@ -27,6 +28,23 @@
#include "em_cmu.h"
#if defined(DAC_COUNT) && DAC_COUNT > 0
#include "em_dac.h"
#elif defined(VDAC_COUNT) && VDAC_COUNT > 0
#include "em_vdac.h"
#endif
/* DAC implementation can be used for VDAC by mapping the symbols */
#if defined(VDAC_COUNT) && VDAC_COUNT > 0
#define DAC_INIT_DEFAULT VDAC_INIT_DEFAULT
#define DAC_INITCHANNEL_DEFAULT VDAC_INITCHANNEL_DEFAULT
#define DAC_Init_TypeDef VDAC_Init_TypeDef
#define DAC_InitChannel_TypeDef VDAC_InitChannel_TypeDef
#define DAC_Reset VDAC_Reset
#define DAC_Init VDAC_Init
#define DAC_InitChannel VDAC_InitChannel
#define DAC_ChannelOutputSet VDAC_ChannelOutputSet
#endif
int8_t dac_init(dac_t line)
@ -45,7 +63,11 @@ int8_t dac_init(dac_t line)
/* reset and initialize peripheral */
DAC_Init_TypeDef init = DAC_INIT_DEFAULT;
#if defined(VDAC_COUNT)
init.reference = dac_config[dev].ref;
init.prescaler = VDAC_PrescaleCalc(MHZ(1000000), true, 0);
#endif
DAC_Reset(dac_config[dev].dev);
DAC_Init(dac_config[dev].dev, &init);