From 93b063fedfcf7409a67df035170ea5670cad22e1 Mon Sep 17 00:00:00 2001 From: Josh Rahm Date: Tue, 24 Nov 2020 13:46:41 -0700 Subject: Moved action to top level. Removed old iterations of the project and moved the files from 02-usart to the root directory since that's the sole place where the action is and that subproject has outgrown its initial title. --- 01-system-clock/src/spin.c | 49 ---------------------------------------------- 1 file changed, 49 deletions(-) delete mode 100644 01-system-clock/src/spin.c (limited to '01-system-clock/src/spin.c') diff --git a/01-system-clock/src/spin.c b/01-system-clock/src/spin.c deleted file mode 100644 index fbd16b6..0000000 --- a/01-system-clock/src/spin.c +++ /dev/null @@ -1,49 +0,0 @@ -#include "spin.h" -#include "delay.h" -#include "gpio.h" - -#define SHORT_DELAY 200000 -#define LONG_DELAY (SHORT_DELAY * 2) - -static void flash_bit( - uint32_t base, gpio_output_pin_t out_pin, - uint8_t bit /* 0 => 0, non-zero => 1 */) -{ - pin_on(out_pin); - if (bit) { - delay(base * 2); - } else { - delay(base); - } - pin_off(out_pin); - delay(base); -} - -void spin(uint32_t base, uint8_t c) -{ - uint8_t code; - __IO gpio_port_t* port_b = enable_gpio(GPIO_PORT_B); - gpio_output_pin_t pin3 = set_gpio_pin_output(port_b, PIN_3); - - for (;;) { - code = c; - flash_bit(base, pin3, code & 0x80); - code <<= 1; - flash_bit(base, pin3, code & 0x80); - code <<= 1; - flash_bit(base, pin3, code & 0x80); - code <<= 1; - flash_bit(base, pin3, code & 0x80); - - code <<= 1; - flash_bit(base, pin3, code & 0x80); - code <<= 1; - flash_bit(base, pin3, code & 0x80); - code <<= 1; - flash_bit(base, pin3, code & 0x80); - code <<= 1; - flash_bit(base, pin3, code & 0x80); - - delay(base * 4); - } -} -- cgit