From f6d6df03826083a244715b88a30ad681f17b4510 Mon Sep 17 00:00:00 2001
From: Keith Packard <keithp@keithp.com>
Date: Sat, 27 Apr 2013 00:25:36 -0700
Subject: [PATCH] altos: Remove stdio from stm-flash

This saves enough memory to fit in under 4kB

Signed-off-by: Keith Packard <keithp@keithp.com>
---
 src/stm-flash/Makefile       |  7 +++----
 src/stm-flash/ao_pins.h      |  8 ++++----
 src/stm-flash/ao_stm_flash.c | 27 ++++++++++++++++-----------
 3 files changed, 23 insertions(+), 19 deletions(-)

diff --git a/src/stm-flash/Makefile b/src/stm-flash/Makefile
index a4dd5ab8..1ea35581 100644
--- a/src/stm-flash/Makefile
+++ b/src/stm-flash/Makefile
@@ -23,16 +23,15 @@ ALTOS_SRC = \
 	ao_notask.c \
 	ao_timer.c \
 	ao_usb_stm.c \
-	ao_stdio.c \
 	ao_flash_stm.c
 
-PRODUCT=StmFlash-v0.0
-PRODUCT_DEF=-DSTM_FLASH
+PRODUCT=AltosFlash-$(VERSION)
+PRODUCT_DEF=-DALTOS_FLASH
 IDPRODUCT=0x000a
 
 CFLAGS = $(PRODUCT_DEF) $(STM_CFLAGS) -g -Os
 
-PROG=stm-flash-$(VERSION).elf
+PROG=altos-flash-$(VERSION).elf
 
 SRC=$(ALTOS_SRC) ao_stm_flash.c
 OBJ=$(SRC:.c=.o)
diff --git a/src/stm-flash/ao_pins.h b/src/stm-flash/ao_pins.h
index 8fb56f7b..d6c72653 100644
--- a/src/stm-flash/ao_pins.h
+++ b/src/stm-flash/ao_pins.h
@@ -45,7 +45,7 @@
 #define AO_RCC_CFGR_PPRE2_DIV	STM_RCC_CFGR_PPRE2_DIV_1
 
 #define HAS_USB			1
-#define USE_USB_STDIN		1
+#define USE_USB_STDIO		0
 #define HAS_BEEP		0
 #define HAS_TASK		0
 #define HAS_ECHO		0
@@ -71,9 +71,9 @@
 #define AO_BOOT_CHAIN		1
 #define AO_BOOT_PIN		1
 
-#define AO_BOOT_APPLICATION_GPIO	stm_gpioa
-#define AO_BOOT_APPLICATION_PIN		0
+#define AO_BOOT_APPLICATION_GPIO	stm_gpiod
+#define AO_BOOT_APPLICATION_PIN		2
 #define AO_BOOT_APPLICATION_VALUE	1
-#define AO_BOOT_APPLICATION_MODE	0
+#define AO_BOOT_APPLICATION_MODE	AO_EXTI_MODE_PULL_UP
 
 #endif /* _AO_PINS_H_ */
diff --git a/src/stm-flash/ao_stm_flash.c b/src/stm-flash/ao_stm_flash.c
index df06bb09..f8580735 100644
--- a/src/stm-flash/ao_stm_flash.c
+++ b/src/stm-flash/ao_stm_flash.c
@@ -30,8 +30,11 @@ void
 ao_put_string(__code char *s)
 {
 	char	c;
-	while ((c = *s++))
-		putchar(c);
+	while ((c = *s++)) {
+		if (c == '\n')
+			ao_usb_putchar('\r');
+		ao_usb_putchar(c);
+	}
 }
 
 void
@@ -47,7 +50,7 @@ ao_get_hex32(void)
 	uint32_t v = 0;
 
 	for (;;) {
-		n = getchar();
+		n = ao_usb_getchar();
 		if (n != ' ')
 			break;
 	}
@@ -61,7 +64,7 @@ ao_get_hex32(void)
 		else
 			break;
 		v = (v << 4) | n;
-		n = getchar();
+		n = ao_usb_getchar();
 	}
 	return v;
 }
@@ -91,7 +94,7 @@ ao_block_write(void)
 		return;
 	}
 	for (i = 0; i < 256; i++)
-		u.data8[i] = getchar();
+		u.data8[i] = ao_usb_getchar();
 	ao_flash_page(p, u.data32);
 }
 
@@ -105,23 +108,25 @@ ao_block_read(void)
 
 	for (i = 0; i < 256; i++) {
 		c = *p++;
-		putchar(c);
+		ao_usb_putchar(c);
 	}
 }
 
 static void
 ao_show_version(void)
 {
-	puts("altos-loader");
-	ao_put_string("manufacturer     "); puts(ao_manufacturer);
-	ao_put_string("product          "); puts(ao_product);
-	ao_put_string("software-version "); puts(ao_version);
+	ao_put_string("altos-loader");
+	ao_put_string("\nmanufacturer     "); ao_put_string(ao_manufacturer);
+	ao_put_string("\nproduct          "); ao_put_string(ao_product);
+	ao_put_string("\nsoftware-version "); ao_put_string(ao_version);
+	ao_put_string("\n");
 }
 
 static void
 ao_flash_task(void) {
 	for (;;) {
-		switch (getchar()) {
+		ao_usb_flush();
+		switch (ao_usb_getchar()) {
 		case 'v': ao_show_version(); break;
 		case 'a': ao_application(); break;
 		case 'X': ao_block_erase(); break;
-- 
2.30.2