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70068985a7
The gpio_out_toggle() function in the sam3x8e and stm32f1 code was only valid if it was called with irqs disabled. Commits018c5daaand9c52ad43enabled the lcd code which called gpio_out_toggle() with irqs enabled. This could cause corruption of the gpio state. Introduce a gpio_out_toggle_noirq() function that will only be invoked with irqs disabled, and fix gpio_out_toggle() on sam3x8e and stm32f1 so that it safe to call even if irqs are enabled. Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
30 lines
772 B
C
30 lines
772 B
C
#ifndef __LINUX_GPIO_H
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#define __LINUX_GPIO_H
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#include <stdint.h> // uint8_t
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struct gpio_out {
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uint32_t pin;
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};
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struct gpio_out gpio_out_setup(uint8_t pin, uint8_t val);
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void gpio_out_toggle_noirq(struct gpio_out g);
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void gpio_out_toggle(struct gpio_out g);
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void gpio_out_write(struct gpio_out g, uint8_t val);
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struct gpio_adc {
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int fd;
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};
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struct gpio_adc gpio_adc_setup(uint8_t pin);
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uint32_t gpio_adc_sample(struct gpio_adc g);
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uint16_t gpio_adc_read(struct gpio_adc g);
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void gpio_adc_cancel_sample(struct gpio_adc g);
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struct spi_config {
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int fd;
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};
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struct spi_config spi_setup(uint32_t bus, uint8_t mode, uint32_t rate);
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void spi_transfer(struct spi_config config, uint8_t receive_data
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, uint8_t len, uint8_t *data);
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#endif // gpio.h
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