altos: Call ao_task_init before initializing any drivers

When using task queues, the sleep queues must be initialized before
any invocation of ao_wakeup or the OS will crash. Just make sure
ao_task_init is always invoked early in the task process to get that done.

Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 137 insertions, 0 deletions

diff --git a/src/stm-flash/ao_stm_flash.c b/src/stm-flash/ao_stm_flash.c
new file mode 100644
index 00000000..df466d85
--- /dev/null
+++ b/src/stm-flash/ao_stm_flash.c
@@ -0,0 +1,137 @@
+/*
+ * Copyright © 2011 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include "ao.h"
+#include <ao_exti.h>
+#include <ao_boot.h>
+#include <ao_flash_stm.h>
+
+void
+ao_panic(uint8_t reason)
+{
+	for (;;);
+}
+
+void
+ao_application(void)
+{
+	ao_boot_reboot(AO_BOOT_APPLICATION_BASE);
+}
+
+static uint32_t
+ao_cmd_hex32(void)
+{
+	__pdata uint8_t	r = ao_cmd_lex_error;
+	int8_t	n;
+	uint32_t v = 0;
+
+	ao_cmd_white();
+	for(;;) {
+		n = ao_cmd_hexchar(ao_cmd_lex_c);
+		if (n < 0)
+			break;
+		v = (v << 4) | n;
+		r = ao_cmd_success;
+		ao_cmd_lex();
+	}
+	if (r != ao_cmd_success)
+		ao_cmd_status = r;
+	return v;
+}
+
+void
+ao_block_erase(void)
+{
+	uint32_t	addr = ao_cmd_hex32();
+	uint32_t	*p = (uint32_t *) addr;
+
+	ao_flash_erase_page(p);
+}
+
+void
+ao_block_write(void)
+{
+	uint32_t	addr = ao_cmd_hex32();
+	uint32_t	*p = (uint32_t *) addr;
+	union {
+		uint8_t		data8[256];
+		uint32_t	data32[64];
+	} u;
+	uint16_t	i;
+
+	if (addr < 0x08002000 || 0x08200000 <= addr) {
+		puts("Invalid address");
+		return;
+	}
+	for (i = 0; i < 256; i++)
+		u.data8[i] = i;
+	ao_flash_page(p, u.data32);
+}
+
+static void
+puthex(uint8_t c)
+{
+	c &= 0xf;
+	if (c < 10)
+		c += '0';
+	else
+		c += 'a' - 10;
+	putchar (c);
+}
+
+void
+ao_block_read(void)
+{
+	uint32_t	addr = ao_cmd_hex32();
+	uint8_t		*p = (uint8_t *) addr;
+	uint16_t	i;
+	uint8_t		c;
+
+	for (i = 0; i < 256; i++) {
+		c = *p++;
+		puthex(c);
+		puthex(c>>4);
+		if ((i & 0xf) == 0xf)
+			putchar('\n');
+	}
+}
+
+__code struct ao_cmds ao_flash_cmds[] = {
+	{ ao_application, "a\0Switch to application" },
+	{ ao_block_erase, "e <addr>\0Erase block." },
+	{ ao_block_write, "W <addr>\0Write block. 256 binary bytes follow newline" },
+	{ ao_block_read, "R <addr>\0Read block. Returns 256 bytes" },
+	{ 0, NULL },
+};
+
+int
+main(void)
+{
+	ao_clock_init();
+
+	ao_task_init();
+
+	ao_timer_init();
+//	ao_dma_init();
+	ao_cmd_init();
+//	ao_exti_init();
+	ao_usb_init();
+
+	ao_cmd_register(&ao_flash_cmds[0]);
+	ao_start_scheduler();
+	return 0;
+}