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Wrap comments in example at 80 columns to fit in code block.

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This commit is contained in:
Andrew Walbran 2023-03-07 10:58:40 +00:00
parent e751c30061
commit b1fa8da341
1 changed files with 4 additions and 2 deletions
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6
src/bare-metal/microcontrollers/examples/src/bin/mmio.rs
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@ -43,7 +43,8 @@ fn main() -> ! {
// Configure GPIO 0 pins 21 and 28 as push-pull outputs.
let pin_cnf_21 = (GPIO_P0 + PIN_CNF + 21 * size_of::<u32>()) as *mut u32;
let pin_cnf_28 = (GPIO_P0 + PIN_CNF + 28 * size_of::<u32>()) as *mut u32;
// Safe because the pointers are to valid peripheral control registers, and no aliases exist.
// Safe because the pointers are to valid peripheral control registers, and
// no aliases exist.
unsafe {
pin_cnf_21.write_volatile(
DIR_OUTPUT | INPUT_DISCONNECT | PULL_DISABLED | DRIVE_S0S1 | SENSE_DISABLED,
@ -56,7 +57,8 @@ fn main() -> ! {
// Set pin 28 low and pin 21 high to turn the LED on.
let gpio0_outset = (GPIO_P0 + OUTSET) as *mut u32;
let gpio0_outclr = (GPIO_P0 + OUTCLR) as *mut u32;
// Safe because the pointers are to valid peripheral control registers, and no aliases exist.
// Safe because the pointers are to valid peripheral control registers, and
// no aliases exist.
unsafe {
gpio0_outclr.write_volatile(1 << 28);
gpio0_outset.write_volatile(1 << 21);