Big Sansa update: Go back to using the common crt0-pp.S. Add LCD driver. Add ADC driver (may not be needed). Fix a bug in the button driver.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11237 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 112 insertions, 19 deletions

diff --git a/bootloader/e200.c b/bootloader/e200.c
index 91217f5c70..27b1118a1c 100644
--- a/bootloader/e200.c
+++ b/bootloader/e200.c
@@ -36,33 +36,61 @@
 #include "power.h"
 #include "file.h"
 
-void main(void)
+static inline void blink(void)
 {
     volatile unsigned int* ptr;
     int i;
+    ptr = (volatile unsigned int*)0x70000020;
 
-    while(1)
+    *ptr &= ~(1 << 13);
+    for(i = 0; i < 0xfffff; i++)
+    {
+    }
+    *ptr |= (1 << 13);
+    for(i = 0; i < 0xfffff; i++)
     {
-        // blink wheel backlight
-        ptr = (volatile unsigned int*)0x70000020;
-        if((*ptr) & (1 << 13))
-        {
-            *ptr = (*ptr) & ~(1 << 13);
-
-        }
-        else
-        {
-            *ptr = (*ptr) | (1 << 13);
-        }
-
-        // wait a while
-        for(i = 0; i < 0xfffff; i++)
-        {
-        }
+    }
+}
 
+static inline void slow_blink(void)
+{
+    volatile unsigned int* ptr;
+    int i;
+    ptr = (volatile unsigned int*)0x70000020;
+
+    *ptr &= ~(1 << 13);
+    for(i = 0; i < (0xfffff); i++)
+    {
+    }
+    for(i = 0; i < (0xfffff); i++)
+    {
+    }
+    for(i = 0; i < (0xfffff); i++)
+    {
+    }
+
+    *ptr |= (1 << 13);
+    for(i = 0; i < (0xfffff); i++)
+    {
+    }
+    for(i = 0; i < (0xfffff); i++)
+    {
+    }
+    for(i = 0; i < (0xfffff); i++)
+    {
     }
 }
 
+static inline unsigned long get_pc(void)
+{
+    unsigned long pc;
+    asm volatile (
+        "mov %0, pc\n"
+        : "=r"(pc)
+    );
+    return pc;
+}
+
 /* These functions are present in the firmware library, but we reimplement
    them here because the originals do a lot more than we want */
 
@@ -72,7 +100,62 @@ void reset_poweroff_timer(void)
 
 int dbg_ports(void)
 {
-   return 0;
+    unsigned int gpio_a, gpio_b, gpio_c, gpio_d;
+    unsigned int gpio_e, gpio_f, gpio_g, gpio_h;
+    unsigned int gpio_i, gpio_j, gpio_k, gpio_l;
+
+    char buf[128];
+    int line;
+
+    lcd_setmargins(0, 0);
+    lcd_clear_display();
+    lcd_setfont(FONT_SYSFIXED);
+
+    while(1)
+    {
+        gpio_a = GPIOA_INPUT_VAL;
+        gpio_b = GPIOB_INPUT_VAL;
+        gpio_c = GPIOC_INPUT_VAL;
+
+        gpio_g = GPIOG_INPUT_VAL;
+        gpio_h = GPIOH_INPUT_VAL;
+        gpio_i = GPIOI_INPUT_VAL;
+
+        line = 0;
+        snprintf(buf, sizeof(buf), "GPIO_A: %02x GPIO_G: %02x", gpio_a, gpio_g);
+        lcd_puts(0, line++, buf);
+        snprintf(buf, sizeof(buf), "GPIO_B: %02x GPIO_H: %02x", gpio_b, gpio_h);
+        lcd_puts(0, line++, buf);
+        snprintf(buf, sizeof(buf), "GPIO_C: %02x GPIO_I: %02x", gpio_c, gpio_i);
+        lcd_puts(0, line++, buf);
+        line++;
+
+        gpio_d = GPIOD_INPUT_VAL;
+        gpio_e = GPIOE_INPUT_VAL;
+        gpio_f = GPIOF_INPUT_VAL;
+
+        gpio_j = GPIOJ_INPUT_VAL;
+        gpio_k = GPIOK_INPUT_VAL;
+        gpio_l = GPIOL_INPUT_VAL;
+
+        snprintf(buf, sizeof(buf), "GPIO_D: %02x GPIO_J: %02x", gpio_d, gpio_j);
+        lcd_puts(0, line++, buf);
+        snprintf(buf, sizeof(buf), "GPIO_E: %02x GPIO_K: %02x", gpio_e, gpio_k);
+        lcd_puts(0, line++, buf);
+        snprintf(buf, sizeof(buf), "GPIO_F: %02x GPIO_L: %02x", gpio_f, gpio_l);
+        lcd_puts(0, line++, buf);
+        line++;
+        snprintf(buf, sizeof(buf), "ADC_1: %02x", adc_read(ADC_0));
+        lcd_puts(0, line++, buf);
+        snprintf(buf, sizeof(buf), "ADC_2: %02x", adc_read(ADC_1));
+        lcd_puts(0, line++, buf);
+        snprintf(buf, sizeof(buf), "ADC_3: %02x", adc_read(ADC_2));
+        lcd_puts(0, line++, buf);
+        snprintf(buf, sizeof(buf), "ADC_4: %02x", adc_read(ADC_3));
+        lcd_puts(0, line++, buf);
+        lcd_update();
+    }
+    return 0;
 }
 
 void mpeg_stop(void)
@@ -95,3 +178,13 @@ void system_reboot(void)
 {
 
 }
+
+void main(void)
+{
+    kernel_init();
+    adc_init();
+    lcd_init_device();
+
+    dbg_ports();
+}
+