Cameron/pico-examples
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Make examples friendlier for non GCC compilers and fixed slave_mem_i2c.c to compile on boards without I2C pins (#336)

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This commit is contained in:
Graham Sanderson
2023-03-10 15:41:40 -06:00
committed by GitHub
parent 9d3fea1419
commit 60829a134a
39 changed files with 89 additions and 86 deletions
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4
pio/i2c/i2c.pio
View File

@@ -110,8 +110,8 @@ static inline void i2c_program_init(PIO pio, uint sm, uint offset, uint pin_sda,
// Clear IRQ flag before starting, and make sure flag doesn't actually
// assert a system-level interrupt (we're using it as a status flag)
pio_set_irq0_source_enabled(pio, pis_interrupt0 + sm, false);
pio_set_irq1_source_enabled(pio, pis_interrupt0 + sm, false);
pio_set_irq0_source_enabled(pio, (enum pio_interrupt_source) ((uint) pis_interrupt0 + sm), false);
pio_set_irq1_source_enabled(pio, (enum pio_interrupt_source) ((uint) pis_interrupt0 + sm), false);
pio_interrupt_clear(pio, sm);
// Configure and start SM

8
pio/i2c/pio_i2c.c
View File

@@ -33,10 +33,14 @@ static inline void pio_i2c_put16(PIO pio, uint sm, uint16_t data) {
while (pio_sm_is_tx_fifo_full(pio, sm))
;
// some versions of GCC dislike this
#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wstrict-aliasing"
#endif
*(io_rw_16 *)&pio->txf[sm] = data;
#ifdef __GNUC__
#pragma GCC diagnostic pop
#endif
}
@@ -48,10 +52,14 @@ void pio_i2c_put_or_err(PIO pio, uint sm, uint16_t data) {
if (pio_i2c_check_error(pio, sm))
return;
// some versions of GCC dislike this
#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wstrict-aliasing"
#endif
*(io_rw_16 *)&pio->txf[sm] = data;
#ifdef __GNUC__
#pragma GCC diagnostic pop
#endif
}
uint8_t pio_i2c_get(PIO pio, uint sm) {