1 files changed, 3 insertions, 151 deletions

diff --git a/src/main.c b/src/main.c
index d7eab9b..4cd54de 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,12 +1,9 @@
 #include <stdint.h>
 #include <stdio.h>
-#include <string.h>
 
 #include "ch573/gpio.h"
 #include "ch573/pwr.h"
 #include "ch573/uart.h"
-#include "isr_vector.h"
-#include "panic.h"
 
 #define GPIO_PORT_A ch573_gpio__gpio_port_a
 #define GPIO_PORT CH573_GPIO__GPIO_PORT_T_INTF
@@ -17,48 +14,6 @@
 #define PWR1 ch573_pwr__pwr_mgmt
 #define PWR CH573_PWR__PWR_MGMT_T_INTF
 
-void stack_dump(uint32_t*);
-void print_hex(uint32_t x);
-
-int uart1_FILE_put(char ch, FILE* f)
-{
-  if (ch == '\n') {
-    uart1_FILE_put('\r', f);
-  }
-
-  while (!UART.lsr.thr_empty.get(UART1));
-  UART.thr.set(UART1, ch);
-  return 1;
-}
-
-static int uart1_FILE_get(FILE* f)
-{
-  return -1;
-}
-
-static int uart1_FILE_flush(FILE* f)
-{
-  return 0;
-}
-
-FILE _uart1_FILE = (FILE){
-    .put = uart1_FILE_put,
-    .get = uart1_FILE_get,
-    .flush = uart1_FILE_flush,
-    .flags = __SWR,
-};
-
-FILE* const stdout = &_uart1_FILE;
-
-// FILE* const stdout = &_uart1_FILE;
-
-/*
- * Function which delays for a bit.
- */
-void delay(void);
-
-int main(void);
-
 uint32_t collatz(uint32_t n)
 {
   uint32_t c = 0;
@@ -75,118 +30,15 @@ uint32_t collatz(uint32_t n)
   return c;
 }
 
-void blink_n(int n)
-{
-  uint32_t bit = 1 << 8;
-  while (n > 0) {
-    GPIO_PORT.out.set(GPIO_PORT_A, OFF, 8);
-    delay();
-    GPIO_PORT.out.set(GPIO_PORT_A, ON, 8);
-    delay();
-    --n;
-  }
-}
-
-void delay(void)
-{
-  for (volatile uint32_t i = 0; i < 10000; ++i) {
-    asm volatile("");
-  }
-}
-
-volatile uint32_t deadbeef = 0xdeadbeef;
-
-#define gpio_usart1_tx_pin 9
-#define gpio_usart1_rx_pin 8
-
-const char* hello_world_static = "Hello, World!\r\n";
-
-#define BAUD_RATE 115200
-
-int test(char ch, ...);
-
-volatile int zero = 0;
-
-/* Main routine. This is called on_reset once everything else has been set up.
+/*
+ * Main routine. This is called on_reset once everything else has been set up.
  */
 int main(void)
 {
-  GPIO_PORT.dir.set(GPIO_PORT_A, DIR_OUT, gpio_usart1_tx_pin);
-  GPIO_PORT.pd_drv.set(GPIO_PORT_A, 0, gpio_usart1_tx_pin);
-
   GPIO_PORT.dir.set(GPIO_PORT_A, DIR_OUT, 8);
   GPIO_PORT.pd_drv.set(GPIO_PORT_A, 0, 8);
 
-  UART.div.set(UART1, 1);
-  UART.fcr.set(UART1, 0x07);
-  UART.ier.txd_en.set(UART1, ON);
-  UART.lcr.word_sz.set(UART1, WORD_SZ_8_BITS);
-
-  volatile uint32_t dl = (10 * 6400000 / 8 / BAUD_RATE + 5) / 10;
-  UART.dl.set(UART1, dl);
-
-  char buf[32] = {0};
-  volatile uint32_t i = 0xdeadbeef;
-
-  asm volatile("ebreak");
-
-
-  panic(0xdeadbeef);
-
-  stack_dump(&i);
-
-  print_hex(i);
-
-  stdout->put('a', NULL);
-  stdout->put('\n', NULL);
-  fputs("bulitin fputs\n", stdout);
-  puts("bulitin puts\n");
-
-  while (1) {
-    fprintf(stdout, "Hello! %% %s\n", "Josh");
-    fputs(buf, &_uart1_FILE);
-    delay();
-  }
-
-  // printf("Hello: %s\n", hello_world_static);
-  // printf("Here's deadbeef: %08x\n", deadbeef);
-
+  printf("Hello, %s!\n", "World");
   for (;;);
   return 0;
 }
-
-IRQ(systick)
-{
-  collatz(5);
-}
-
-#define putch(c) uart1_FILE_put(c, NULL)
-void print_binary(uint32_t x)
-{
-  int i = 0;
-  while (i < 32) {
-    int msb = (x & 0x80000000) >> 31;
-    x <<= 1;
-    if (msb) {
-      uart1_FILE_put('1', NULL);
-    } else {
-      uart1_FILE_put('0', NULL);
-    }
-    i++;
-  }
-}
-
-void print_hex(uint32_t x)
-{
-  int i = 0;
-  while (i < 8) {
-    int ms = (x & 0xf0000000) >> 28;
-    x <<= 4;
-    if (ms < 10) {
-      putch('0' + ms);
-    } else {
-      putch('a' + (ms - 10));
-    }
-    ++i;
-  }
-}