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OK, I2C read by DMA works

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This commit is contained in:
Edward Emelianov
2025-09-19 21:24:19 +03:00
parent 934f4fbddd
commit 080be6a1ec
8 changed files with 103 additions and 109 deletions
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26
F3:F303/I2C_scan/i2c.h
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@@ -35,23 +35,25 @@ extern i2c_speed_t i2c_curspeed;
extern volatile uint8_t i2c_scanmode;
// timeout of I2C bus in ms
#define I2C_TIMEOUT (5)
#define I2C_TIMEOUT (5)
void i2c_setup(i2c_speed_t speed);
uint8_t *read_i2c(uint8_t addr, uint16_t nbytes);
uint8_t *read_i2c_reg(uint8_t addr, uint8_t reg, uint16_t nbytes, uint8_t isdma);
uint16_t *read_i2c_reg16(uint8_t addr, uint16_t reg16, uint16_t nbytes, uint8_t isdma);
uint8_t write_i2c(uint8_t addr, uint8_t *data, uint16_t nbytes);
int i2c_busy();
uint8_t write_i2c_dma(uint8_t addr, uint8_t *data, uint16_t nbytes);
uint8_t write_i2c_dma16(uint8_t addr, uint16_t *data, uint16_t nwords);
uint8_t read_i2c_dma(uint8_t addr, uint16_t nbytes);
uint8_t *i2c_read(uint8_t addr, uint16_t nbytes);
uint8_t i2c_read_dma(uint8_t addr, uint16_t nbytes);
uint8_t i2c_read_dma16(uint8_t addr, uint16_t nwords);
uint8_t *i2c_read_reg(uint8_t addr, uint8_t reg, uint16_t nbytes, uint8_t isdma);
uint16_t *i2c_read_reg16(uint8_t addr, uint16_t reg16, uint16_t nbytes, uint8_t isdma);
uint8_t i2c_write(uint8_t addr, uint8_t *data, uint8_t nbytes);
uint8_t i2c_write_dma(uint8_t addr, uint8_t *data, uint8_t nbytes);
uint8_t i2c_write_dma16(uint8_t addr, uint16_t *data, uint8_t nwords);
void i2c_bufdudump();
int i2cdma_haderr();
uint8_t *i2cdma_getbuf(uint16_t *len);
uint8_t read_i2c_dma16(uint8_t addr, uint16_t nwords);
void endianness(uint8_t isbig);
int i2c_dma_haderr();
uint8_t *i2c_dma_getbuf(uint16_t *len);
void i2c_endianness(uint8_t isbig);
int i2c_getwords(uint16_t *buf, int bufsz);
void i2c_init_scan_mode();