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digital IO write optimizations for 16bit parallel display types 

- digitalWrite value increased to 16 bit width
- added IO device bit access functions
- removed PWM enable/disable from pinMode()
This commit is contained in:
stevstrong 2017-05-19 17:24:26 +02:00
parent b8afde026a
commit 04cf037a1d
3 changed files with 16 additions and 6 deletions
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2
STM32F4/cores/maple/io.h
View File

@ -121,7 +121,7 @@ void pinMode(uint8 pin, WiringPinMode mode);
* @param value Either LOW (write a 0) or HIGH (write a 1).
* @see pinMode()
*/
void digitalWrite(uint8 pin, uint8 value);
void digitalWrite(uint8 pin, uint16 value);
/**
* Read a digital value from a pin. The pin must have its mode set to

14
STM32F4/cores/maple/libmaple/gpio.h
View File

@ -60,10 +60,12 @@ static inline afio_exti_port gpio_exti_port(const gpio_dev *dev) {
* @param val If true, set the pin. If false, reset the pin.
*/
static inline void gpio_write_pin(uint8_t pin, uint16 val) {
uint16_t bit = BIT(pin&0x0F);
gpio_reg_map *regs = (PIN_MAP[pin].gpio_device)->regs;
if (val) {
(PIN_MAP[pin].gpio_device)->regs->BSRRL = BIT(pin&0x0F);
regs->BSRRL = bit;
} else {
(PIN_MAP[pin].gpio_device)->regs->BSRRH = BIT(pin&0x0F);
regs->BSRRH = bit;
}
}
@ -71,10 +73,18 @@ static inline void gpio_set_pin(uint8_t pin) {
(PIN_MAP[pin].gpio_device)->regs->BSRRL = BIT(pin&0x0F);
}
static inline void gpio_set_dev_bit(const gpio_dev * dev, uint8_t bit) {
dev->regs->BSRRL = BIT(bit);
}
static inline void gpio_clear_pin(uint8_t pin) {
(PIN_MAP[pin].gpio_device)->regs->BSRRH = BIT(pin&0x0F);
}
static inline void gpio_clear_dev_bit(const gpio_dev * dev, uint8_t bit) {
dev->regs->BSRRH = BIT(bit);
}
/**
* Determine whether or not a GPIO pin is set.
*

6
STM32F4/cores/maple/wirish_digital.cpp
View File

@ -73,14 +73,14 @@ void pinMode(uint8 pin, WiringPinMode mode) {
}
gpio_set_mode(pin, outputMode);
/*
if (PIN_MAP[pin].timer_device != NULL) {
/* Enable/disable timer channels if we're switching into or
* out of PWM. */
// Enable/disable timer channels if we're switching into or out of PWM.
timer_set_mode(PIN_MAP[pin].timer_device,
PIN_MAP[pin].timer_channel,
pwm ? TIMER_PWM : TIMER_DISABLED);
}
*/
}