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pio_claim_free_sm_and_add_program_for_gpio_range() function
Finds a PIO and statemachine and adds a program into PIO memory This variation of pio_claim_free_sm_and_add_program is useful on RP2350 QFN80 where the "GPIO Base" must be set per PIO instance to either address the 32 GPIOs (0->31) or the 32 GPIOS (16-47). No single PIO instance can interact with both pins 0->15 or 32->47 at the same time. This method takes additional information about the GPIO pins needed (via gpi_base and gpio_count), and optionally will set the GPIO base (\see pio_set_gpio_base) of an unused PIO instance if necessary
Syntax
bool pio_claim_free_sm_and_add_program_for_gpio_range(const pio_program_t *program,
PIO *pio,
uint *sm,
uint *offset,
uint gpio_base,
uint gpio_count,
bool set_gpio_base);
Implemented in ![]()
pio.c:335
Return value
true on success, false otherwise \see pio_remove_program_unclaim_sm
Related Functions
Found 11 other functions taking a ![]()
pio_program
argument:
Function
Description
Attempt to load the program \see pio_can_add_program() if you need to check whether the program can be loaded
Determine whether the given program can (at the time of the call) be loaded onto the PIO instance
Remove a program from a PIO instance's instruction memory
Finds a PIO and statemachine and adds a program into PIO memory
Determine whether the given program can (at the time of the call) be loaded onto the PIO instance starting at a particular location
Attempt to load the program at the specified instruction memory offset \see pio_can_add_program_at_offset() if you need to check whether the program can be loaded
Removes a program from PIO memory and unclaims the state machine