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spicmds: Rework SPI message transmission

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Improve the SPI message transmit system.  Add support for bus speed
and bus mode.  Add support for sending SPI messages on shutdown.

Signed-off-by: Petri Honkala <cruwaller@gmail.com>
Signed-off-by: Douglas Hammond <wizhippo@gmail.com>
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor
2018-05-04 12:27:52 -04:00
parent 838da992e8
commit 22487d95e9
7 changed files with 244 additions and 45 deletions
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8
src/generic/gpio.h
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@@ -30,7 +30,11 @@ uint32_t gpio_adc_sample(struct gpio_adc g);
uint16_t gpio_adc_read(struct gpio_adc g);
void gpio_adc_cancel_sample(struct gpio_adc g);
void spi_config(void);
void spi_transfer(char *data, uint8_t len);
struct spi_config {
uint32_t cfg;
};
struct spi_config spi_setup(uint32_t bus, uint8_t mode, uint32_t rate);
void spi_transfer(struct spi_config config, uint8_t receive_data
, uint8_t len, uint8_t *data);
#endif // gpio.h