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stm32: Be explicit in layout of gpio banks in digital_regs variable 

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2019-10-15 18:02:21 -04:00
parent f160a3a824
commit c2881f7d15
1 changed files with 7 additions and 3 deletions
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10
src/stm32/gpio.c
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@ -26,12 +26,12 @@ DECL_ENUMERATION_RANGE("pin", "PI0", GPIO('I', 0), 16);
#endif
GPIO_TypeDef * const digital_regs[] = {
GPIOA, GPIOB, GPIOC, GPIOD, GPIOE,
['A' - 'A'] = GPIOA, GPIOB, GPIOC, GPIOD, GPIOE,
#ifdef GPIOH
GPIOF, GPIOG, GPIOH,
['F' - 'A'] = GPIOF, GPIOG, GPIOH,
#endif
#ifdef GPIOI
GPIOI,
['I' - 'A'] = GPIOI,
#endif
};
@ -52,6 +52,8 @@ gpio_out_setup(uint32_t pin, uint32_t val)
if (GPIO2PORT(pin) >= ARRAY_SIZE(digital_regs))
goto fail;
GPIO_TypeDef *regs = digital_regs[GPIO2PORT(pin)];
if (! regs)
goto fail;
gpio_clock_enable(regs);
struct gpio_out g = { .regs=regs, .bit=GPIO2BIT(pin) };
gpio_out_reset(g, val);
@ -106,6 +108,8 @@ gpio_in_setup(uint32_t pin, int32_t pull_up)
if (GPIO2PORT(pin) >= ARRAY_SIZE(digital_regs))
goto fail;
GPIO_TypeDef *regs = digital_regs[GPIO2PORT(pin)];
if (! regs)
goto fail;
struct gpio_in g = { .regs=regs, .bit=GPIO2BIT(pin) };
gpio_in_reset(g, pull_up);
return g;