Add a bunch. Neglected doing commits.HEADmain

Add many different patterns, and organize it.

Add a voltage discovery subsystem to allow the ch573 to detect if it's
on 12v or 5v lights.

1 files changed, 6 insertions, 10 deletions

diff --git a/src/init.c b/src/init.c
index 3aacc66..5f276cb 100644
--- a/src/init.c
+++ b/src/init.c
@@ -1,11 +1,11 @@
 #include <stddef.h>
 #include <stdint.h>
-#include <stdio.h>
 
 #include "ch573/systick.h"
-#include "clock.h"
+#include "gpio.h"
 #include "io.h"
 #include "isr_vector.h"
+#include "risc-v.h"
 
 void on_reset(void);
 
@@ -67,13 +67,6 @@ extern uint32_t DATA_SEGMENT_STOP;
 extern uint32_t BSS_START;
 extern uint32_t BSS_STOP;
 
-static inline void set_mtvec(void* vector_table)
-{
-  uint32_t mtvec = (uint32_t)vector_table;
-  mtvec |= 1;  // Set interrupt table mode to "VECTORED"
-  asm volatile("csrw mtvec, %0" : : "r"(mtvec));
-}
-
 /*
  * Initialize the data segment and the bss segment.
  *
@@ -115,9 +108,12 @@ static __attribute((__section__(".sinit.1"))) void start(void)
   /* Initialize the data segments. */
   init_data_segments();
   /* Set the mtvec to the isr_vector. */
-  set_mtvec(&isr_vector);
+  set_mtvec(&isr_vector, MODE_VECTORED);
   enable_interrupts();
 
+  /* Initialize GPIO pins so they don't create unnecessary electrical noise. */
+  gpio_init();
+
   /* Initialize stdout. */
   init_uart1_for_stdout();