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driver: mcp41x

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bartool
2023-03-26 01:53:19 +01:00
parent d387c26596
commit 66935e66ce
3 changed files with 128 additions and 0 deletions
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50
firmware/shared_libs/drivers/mcp41x/mcp41x.h Normal file
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#pragma once
#define MCP41X_C1 5
#define MCP41X_C0 4
#define MCP41X_P1 1
#define MCP41X_P0 0
#define MCP41X_SHUTDOWN_BIT (1 << MCP41X_C1)
#define MCP41X_WRITE_BIT (1 << MCP41X_C0)
#define MCP41X_POT0_BIT (1 << MCP41X_P0)
#define MCP41X_POT1_BIT (1 << MCP41X_P1)
#define MCP41X_SLEEP (MCP41X_SHUTDOWN_BIT | MCP41X_POT0_BIT | MCP41X_POT0_BIT)
#define MCP41X_WRITE0 (MCP41X_WRITE_BIT | MCP41X_POT0_BIT)
#define MCP41X_WRITE1 (MCP41X_WRITE_BIT | MCP41X_POT1_BIT)
typedef enum
{
MCP41X_ATOB,
MCP41X_BTOA
} mcp41x_dir_t;
typedef enum
{
MCP41X_10K,
MCP41X_50K,
MCP41X_100K,
MCP41X_RES_MAX
} mcp41x_res_t;
typedef struct
{
mcp41x_res_t max_res;
mcp41x_dir_t dir;
uint8_t value;
SPI_HandleTypeDef *hspi;
GPIO_TypeDef *cs_port;
uint16_t cs_pin;
} mcp41x_handle_t;
void mcp41x_init(mcp41x_handle_t *hpot, SPI_HandleTypeDef *hspi, GPIO_TypeDef *cs_port, uint16_t cs_pin, mcp41x_res_t res);
void mcp41x_setValue(mcp41x_handle_t *hpot, uint8_t value);
void mcp41x_setVolume(mcp41x_handle_t *hpot, uint8_t volume);
uint8_t mcp41x_getVolume(mcp41x_handle_t *hpot);
void mcp41x_setResistance(mcp41x_handle_t *hpot, uint32_t resistance);
uint32_t mcp41x_getResistance(mcp41x_handle_t *hpot);
void mcp41x_setWiperDir(mcp41x_handle_t *hpot, mcp41x_dir_t dir);
void mcp41x_sleep(mcp41x_handle_t *hpot);