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-rw-r--r--src/stm/Makefile-flash.defs92
-rw-r--r--src/stm/Makefile.defs5
-rw-r--r--src/stm/altos-loader.ld94
-rw-r--r--src/stm/altos.ld41
-rw-r--r--src/stm/ao_arch.h10
-rw-r--r--src/stm/ao_arch_funcs.h39
-rw-r--r--src/stm/ao_boot.h39
-rw-r--r--src/stm/ao_boot_chain.c67
-rw-r--r--src/stm/ao_boot_pin.c46
-rw-r--r--src/stm/ao_flash.h27
-rw-r--r--src/stm/ao_flash_loader_stm.c32
-rw-r--r--src/stm/ao_flash_stm.c127
-rw-r--r--src/stm/ao_flash_stm_pins.h43
-rw-r--r--src/stm/ao_interrupt.c15
-rw-r--r--src/stm/ao_lcd_stm.c51
-rw-r--r--src/stm/ao_romconfig.c6
-rw-r--r--src/stm/ao_timer.c47
-rw-r--r--src/stm/ao_usb_stm.c237
-rw-r--r--src/stm/registers.ld2
-rw-r--r--src/stm/stm32l.h21
20 files changed, 866 insertions, 175 deletions
diff --git a/src/stm/Makefile-flash.defs b/src/stm/Makefile-flash.defs
new file mode 100644
index 00000000..016bb7e7
--- /dev/null
+++ b/src/stm/Makefile-flash.defs
@@ -0,0 +1,92 @@
+vpath % $(TOPDIR)/stm:$(TOPDIR)/product:$(TOPDIR)/drivers:$(TOPDIR)/core:$(TOPDIR)/util:$(TOPDIR)
+vpath ao-make-product.5c $(TOPDIR)/util
+
+.SUFFIXES: .elf .ihx
+
+.elf.ihx:
+ objcopy -O ihex $*.elf $@
+
+CC=arm-none-eabi-gcc
+SAT=/opt/cortex
+SAT_CLIB=$(SAT)/lib/pdclib-cortex-m3.a
+SAT_CFLAGS=-I$(SAT)/include
+
+ifndef VERSION
+include $(TOPDIR)/Version
+endif
+
+AO_CFLAGS=-I. -I$(TOPDIR)/stm -I$(TOPDIR)/core -I$(TOPDIR)/drivers -I$(TOPDIR)/product -I$(TOPDIR)
+STM_CFLAGS=-std=gnu99 -mlittle-endian -mcpu=cortex-m3 -mthumb -ffreestanding -nostdlib $(AO_CFLAGS) $(SAT_CFLAGS)
+
+LDFLAGS=-L$(TOPDIR)/stm -Wl,-Taltos-loader.ld
+
+NICKLE=nickle
+
+V=0
+# The user has explicitly enabled quiet compilation.
+ifeq ($(V),0)
+quiet = @printf " $1 $2 $@\n"; $($1)
+endif
+# Otherwise, print the full command line.
+quiet ?= $($1)
+
+.c.o:
+ $(call quiet,CC) -c $(CFLAGS) -o $@ $<
+
+INC = \
+ ao.h \
+ ao_arch.h \
+ ao_arch_funcs.h \
+ ao_flash_pins.h \
+ ao_flash_stm_pins.h \
+ ao_flash_task.h \
+ ao_pins.h \
+ ao_product.h \
+ Makefile
+
+#
+# Common AltOS sources
+#
+SRC = \
+ ao_interrupt.c \
+ ao_romconfig.c \
+ ao_boot_chain.c \
+ ao_boot_pin.c \
+ ao_product.c \
+ ao_notask.c \
+ ao_timer.c \
+ ao_usb_stm.c \
+ ao_flash_stm.c \
+ ao_flash_task.c \
+ ao_flash_loader_stm.c
+
+OBJ=$(SRC:.c=.o)
+
+PRODUCT=AltosFlash-$(VERSION)
+PRODUCT_DEF=-DALTOS_FLASH
+IDPRODUCT=0x000a
+
+CFLAGS = $(PRODUCT_DEF) $(STM_CFLAGS) -g -Os
+
+PROGNAME=altos-flash
+PROG=$(HARDWARE)-$(PROGNAME)-$(VERSION).elf
+
+$(PROG): Makefile $(OBJ) altos-loader.ld
+ $(call quiet,CC) $(LDFLAGS) $(CFLAGS) -o $(PROG) $(OBJ) $(SAT_CLIB) -lgcc
+
+ao_product.h: ao-make-product.5c $(TOPDIR)/Version
+ $(call quiet,NICKLE,$<) $< -m altusmetrum.org -i $(IDPRODUCT) -p $(PRODUCT) -v $(VERSION) > $@
+
+$(OBJ): $(INC)
+
+all: $(PROG)
+
+distclean: clean
+
+clean:
+ rm -f *.o $(PROG)
+ rm -f ao_product.h
+
+install:
+
+uninstall:
diff --git a/src/stm/Makefile.defs b/src/stm/Makefile.defs
index 1480f0b3..c8bb7d70 100644
--- a/src/stm/Makefile.defs
+++ b/src/stm/Makefile.defs
@@ -7,6 +7,11 @@ vpath load_csv.5c ../kalman
vpath matrix.5c ../kalman
vpath ao-make-product.5c ../util
+.SUFFIXES: .elf .ihx
+
+.elf.ihx:
+ objcopy -O ihex $*.elf $@
+
CC=arm-none-eabi-gcc
SAT=/opt/cortex
SAT_CLIB=$(SAT)/lib/pdclib-cortex-m3.a
diff --git a/src/stm/altos-loader.ld b/src/stm/altos-loader.ld
new file mode 100644
index 00000000..2be964f2
--- /dev/null
+++ b/src/stm/altos-loader.ld
@@ -0,0 +1,94 @@
+/*
+ * Copyright © 2012 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.
+ */
+
+MEMORY {
+ rom : ORIGIN = 0x08000000, LENGTH = 4K
+ ram : ORIGIN = 0x20000000, LENGTH = 16K
+}
+
+INCLUDE registers.ld
+
+EXTERN (stm_interrupt_vector)
+
+SECTIONS {
+ /*
+ * Rom contents
+ */
+
+ .text : {
+ __text_start__ = .;
+ *(.interrupt) /* Interrupt vectors */
+
+ . = ORIGIN(rom) + 0x100;
+
+ ao_romconfig.o(.romconfig*)
+ ao_product.o(.romconfig*)
+ *(.text) /* Executable code */
+ *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+ *(.rodata*) /* Constants */
+ __text_end__ = .;
+ } > rom
+
+ /* Boot data which must live at the start of ram so that
+ * the application and bootloader share the same addresses.
+ * This must be all uninitialized data
+ */
+ .boot (NOLOAD) : {
+ __boot_start__ = .;
+ *(.boot)
+ __boot_end__ = .;
+ } >ram
+
+ /* Functions placed in RAM (required for flashing)
+ *
+ * Align to 8 bytes as that's what the ARM likes text
+ * segment alignments to be, and if we don't, then
+ * we end up with a mismatch between the location in
+ * ROM and the desired location in RAM. I don't
+ * entirely understand this, but at least this appears
+ * to work...
+ */
+
+ .textram BLOCK(8): {
+ __data_start__ = .;
+ __text_ram_start__ = .;
+ *(.text.ram)
+ __text_ram_end = .;
+ } >ram AT>rom
+
+ /* Data -- relocated to RAM, but written to ROM
+ */
+ .data : {
+ *(.data) /* initialized data */
+ __data_end__ = .;
+ } >ram AT>rom
+
+
+ .bss : {
+ __bss_start__ = .;
+ *(.bss)
+ *(COMMON)
+ __bss_end__ = .;
+ } >ram
+
+ PROVIDE(__stack__ = ORIGIN(ram) + LENGTH(ram));
+ PROVIDE(end = .);
+}
+
+ENTRY(start);
+
+
diff --git a/src/stm/altos.ld b/src/stm/altos.ld
index f78a45d6..3106cc3b 100644
--- a/src/stm/altos.ld
+++ b/src/stm/altos.ld
@@ -16,8 +16,9 @@
*/
MEMORY {
- rom (rx) : ORIGIN = 0x08000000, LENGTH = 128K
- ram (!w) : ORIGIN = 0x20000000, LENGTH = 16K
+ rom (rx) : ORIGIN = 0x08001000, LENGTH = 124K
+ ram (!w) : ORIGIN = 0x20000000, LENGTH = 15872
+ stack (!w) : ORIGIN = 0x20003e00, LENGTH = 512
}
INCLUDE registers.ld
@@ -35,9 +36,19 @@ SECTIONS {
. = ORIGIN(rom) + 0x100;
+
+ /* Ick. What I want is to specify the
+ * addresses of some global constants so
+ * that I can find them across versions
+ * of the application. I can't figure out
+ * how to make gnu ld do that, so instead
+ * we just load the two files that include
+ * these defines in the right order here and
+ * expect things to 'just work'. Don't change
+ * the contents of those files, ok?
+ */
ao_romconfig.o(.romconfig*)
ao_product.o(.romconfig*)
-
*(.text*) /* Executable code */
*(.rodata*) /* Constants */
@@ -45,26 +56,40 @@ SECTIONS {
.ARM.exidx : {
*(.ARM.exidx* .gnu.linkonce.armexidx.*)
- __text_end__ = .;
} > rom
+ __text_end__ = .;
+
+ /* Boot data which must live at the start of ram so that
+ * the application and bootloader share the same addresses.
+ * This must be all uninitialized data
+ */
+ .boot (NOLOAD) : {
+ __boot_start__ = .;
+ *(.boot)
+ . = ALIGN(4);
+ __boot_end__ = .;
+ } >ram
/* Data -- relocated to RAM, but written to ROM
*/
- .data ORIGIN(ram) : AT (ADDR(.ARM.exidx) + SIZEOF (.ARM.exidx)) {
+ .data : {
__data_start__ = .;
*(.data) /* initialized data */
+ . = ALIGN(4);
__data_end__ = .;
- __bss_start__ = .;
- } >ram
+ } >ram AT>rom
.bss : {
+ __bss_start__ = .;
*(.bss)
*(COMMON)
+ . = ALIGN(4);
__bss_end__ = .;
} >ram
- PROVIDE(__stack__ = ORIGIN(ram) + LENGTH(ram));
PROVIDE(end = .);
+
+ PROVIDE(__stack__ = ORIGIN(stack) + LENGTH(stack));
}
ENTRY(start);
diff --git a/src/stm/ao_arch.h b/src/stm/ao_arch.h
index 007f7e2e..adc288c3 100644
--- a/src/stm/ao_arch.h
+++ b/src/stm/ao_arch.h
@@ -88,6 +88,10 @@ extern const uint32_t ao_radio_cal;
* For now, we're running at a weird frequency
*/
+#ifndef AO_HSE
+#error High speed frequency undefined
+#endif
+
#if AO_HSE
#define AO_PLLSRC AO_HSE
#else
@@ -99,6 +103,7 @@ extern const uint32_t ao_radio_cal;
#define AO_HCLK (AO_SYSCLK / AO_AHB_PRESCALER)
#define AO_PCLK1 (AO_HCLK / AO_APB1_PRESCALER)
#define AO_PCLK2 (AO_HCLK / AO_APB2_PRESCALER)
+#define AO_SYSTICK (AO_HCLK / 8)
#if AO_APB1_PRESCALER == 1
#define AO_TIM23467_CLK AO_PCLK1
@@ -128,5 +133,10 @@ extern const uint32_t ao_radio_cal;
void
ao_adc_init();
+#define AO_BOOT_APPLICATION_BASE ((uint32_t *) 0x08001000)
+#define AO_BOOT_LOADER_BASE ((uint32_t *) 0x0)
+#define HAS_BOOT_LOADER 1
+
#endif /* _AO_ARCH_H_ */
+
diff --git a/src/stm/ao_arch_funcs.h b/src/stm/ao_arch_funcs.h
index d1779307..0d63b396 100644
--- a/src/stm/ao_arch_funcs.h
+++ b/src/stm/ao_arch_funcs.h
@@ -113,6 +113,19 @@ ao_spi_init(void);
stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_GPIOEEN); \
} while (0)
+#define ao_disable_port(port) do { \
+ if ((port) == &stm_gpioa) \
+ stm_rcc.ahbenr &= ~(1 << STM_RCC_AHBENR_GPIOAEN); \
+ else if ((port) == &stm_gpiob) \
+ stm_rcc.ahbenr &= ~(1 << STM_RCC_AHBENR_GPIOBEN); \
+ else if ((port) == &stm_gpioc) \
+ stm_rcc.ahbenr &= ~(1 << STM_RCC_AHBENR_GPIOCEN); \
+ else if ((port) == &stm_gpiod) \
+ stm_rcc.ahbenr &= ~(1 << STM_RCC_AHBENR_GPIODEN); \
+ else if ((port) == &stm_gpioe) \
+ stm_rcc.ahbenr &= ~(1 << STM_RCC_AHBENR_GPIOEEN); \
+ } while (0)
+
#define ao_gpio_set(port, bit, pin, v) stm_gpio_set(port, bit, v)
@@ -124,9 +137,7 @@ ao_spi_init(void);
stm_moder_set(port, bit, STM_MODER_OUTPUT);\
} while (0)
-#define ao_enable_input(port,bit,mode) do { \
- ao_enable_port(port); \
- stm_moder_set(port, bit, STM_MODER_INPUT); \
+#define ao_gpio_set_mode(port,bit,mode) do { \
if (mode == AO_EXTI_MODE_PULL_UP) \
stm_pupdr_set(port, bit, STM_PUPDR_PULL_UP); \
else if (mode == AO_EXTI_MODE_PULL_DOWN) \
@@ -134,6 +145,12 @@ ao_spi_init(void);
else \
stm_pupdr_set(port, bit, STM_PUPDR_NONE); \
} while (0)
+
+#define ao_enable_input(port,bit,mode) do { \
+ ao_enable_port(port); \
+ stm_moder_set(port, bit, STM_MODER_INPUT); \
+ ao_gpio_set_mode(port, bit, mode); \
+ } while (0)
#define ao_enable_cs(port,bit) do { \
stm_gpio_set((port), bit, 1); \
@@ -250,6 +267,7 @@ ao_arch_memory_barrier() {
asm volatile("" ::: "memory");
}
+#if HAS_TASK
static inline void
ao_arch_init_stack(struct ao_task *task, void *start)
{
@@ -317,6 +335,21 @@ static inline void ao_arch_restore_stack(void) {
asm("bx lr");
}
+#define HAS_ARCH_START_SCHEDULER 1
+
+static inline void ao_arch_start_scheduler(void) {
+ uint32_t sp;
+ uint32_t control;
+
+ asm("mrs %0,msp" : "=&r" (sp));
+ asm("msr psp,%0" : : "r" (sp));
+ asm("mrs %0,control" : "=&r" (control));
+ control |= (1 << 1);
+ asm("msr control,%0" : : "r" (control));
+}
+
+#endif
+
#define ao_arch_isr_stack()
#define ao_arch_wait_interrupt() do { \
diff --git a/src/stm/ao_boot.h b/src/stm/ao_boot.h
new file mode 100644
index 00000000..e0ed4de7
--- /dev/null
+++ b/src/stm/ao_boot.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright © 2013 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.
+ */
+
+#ifndef _AO_BOOT_H_
+#define _AO_BOOT_H_
+
+void
+ao_boot_chain(uint32_t *base);
+
+void
+ao_boot_check_pin(void);
+
+/* Return true to switch to application (if present) */
+int
+ao_boot_check_chain(void);
+
+void
+ao_boot_reboot(uint32_t *base);
+
+static inline void
+ao_boot_loader(void) {
+ ao_boot_reboot(AO_BOOT_LOADER_BASE);
+}
+
+#endif /* _AO_BOOT_H_ */
diff --git a/src/stm/ao_boot_chain.c b/src/stm/ao_boot_chain.c
new file mode 100644
index 00000000..6a3864a7
--- /dev/null
+++ b/src/stm/ao_boot_chain.c
@@ -0,0 +1,67 @@
+/*
+ * Copyright © 2013 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_boot.h>
+
+void
+ao_boot_chain(uint32_t *base)
+{
+ uint32_t sp;
+ uint32_t pc;
+
+ sp = base[0];
+ pc = base[1];
+ if (0x08000100 <= pc && pc <= 0x08200000 && (pc & 1) == 1) {
+ asm ("mov sp, %0" : : "r" (sp));
+ asm ("mov lr, %0" : : "r" (pc));
+ asm ("bx lr");
+ }
+}
+
+#define AO_BOOT_SIGNAL 0x5a5aa5a5
+#define AO_BOOT_CHECK 0xc3c33c3c
+
+struct ao_boot {
+ uint32_t *base;
+ uint32_t signal;
+ uint32_t check;
+};
+
+static struct ao_boot __attribute__ ((section(".boot"))) ao_boot;
+
+int
+ao_boot_check_chain(void)
+{
+ if (ao_boot.signal == AO_BOOT_SIGNAL && ao_boot.check == AO_BOOT_CHECK) {
+ ao_boot.signal = 0;
+ ao_boot.check = 0;
+ if (ao_boot.base == 0)
+ return 0;
+ ao_boot_chain(ao_boot.base);
+ }
+ return 1;
+}
+
+void
+ao_boot_reboot(uint32_t *base)
+{
+ ao_boot.base = base;
+ ao_boot.signal = AO_BOOT_SIGNAL;
+ ao_boot.check = AO_BOOT_CHECK;
+ ao_arch_reboot();
+}
diff --git a/src/stm/ao_boot_pin.c b/src/stm/ao_boot_pin.c
new file mode 100644
index 00000000..1000a65a
--- /dev/null
+++ b/src/stm/ao_boot_pin.c
@@ -0,0 +1,46 @@
+/*
+ * Copyright © 2013 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_boot.h>
+#include <ao_exti.h>
+
+void
+ao_boot_check_pin(void)
+{
+ uint16_t v;
+
+ /* Enable power interface clock */
+ stm_rcc.apb1enr |= (1 << STM_RCC_APB1ENR_PWREN);
+
+ /* Enable the input pin */
+ ao_enable_input(&AO_BOOT_APPLICATION_GPIO, AO_BOOT_APPLICATION_PIN,
+ AO_BOOT_APPLICATION_MODE);
+
+ for (v = 0; v < 100; v++)
+ ao_arch_nop();
+
+ /* Read the value */
+ v = stm_gpio_get(&AO_BOOT_APPLICATION_GPIO, AO_BOOT_APPLICATION_PIN);
+
+ /* Reset the chip to turn off the port and the power interface clock */
+ ao_gpio_set_mode(&AO_BOOT_APPLICATION_GPIO, AO_BOOT_APPLICATION_PIN, 0);
+ ao_disable_port(&AO_BOOT_APPLICATION_GPIO);
+ stm_rcc.apb1enr &= ~(1 << STM_RCC_APB1ENR_PWREN);
+ if (v == AO_BOOT_APPLICATION_VALUE)
+ ao_boot_chain(AO_BOOT_APPLICATION_BASE);
+}
diff --git a/src/stm/ao_flash.h b/src/stm/ao_flash.h
new file mode 100644
index 00000000..09ca5ac1
--- /dev/null
+++ b/src/stm/ao_flash.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright © 2013 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.
+ */
+
+#ifndef _AO_FLASH_STM_H_
+#define _AO_FLASH_STM_H_
+
+void
+ao_flash_erase_page(uint32_t *page);
+
+void
+ao_flash_page(uint32_t *page, uint32_t *src);
+
+#endif /* _AO_FLASH_STM_H_ */
diff --git a/src/stm/ao_flash_loader_stm.c b/src/stm/ao_flash_loader_stm.c
new file mode 100644
index 00000000..2ab548cf
--- /dev/null
+++ b/src/stm/ao_flash_loader_stm.c
@@ -0,0 +1,32 @@
+/*
+ * Copyright © 2013 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_task.h>
+
+int
+main(void)
+{
+ ao_clock_init();
+
+ ao_usb_init();
+
+ ao_flash_task();
+ return 0;
+}
diff --git a/src/stm/ao_flash_stm.c b/src/stm/ao_flash_stm.c
new file mode 100644
index 00000000..d7a85582
--- /dev/null
+++ b/src/stm/ao_flash_stm.c
@@ -0,0 +1,127 @@
+/*
+ * Copyright © 2013 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_flash.h>
+
+static uint8_t
+ao_flash_pecr_is_locked(void)
+{
+ return (stm_flash.pecr & (1 << STM_FLASH_PECR_PELOCK)) != 0;
+}
+
+static uint8_t
+ao_flash_pgr_is_locked(void)
+{
+ return (stm_flash.pecr & (1 << STM_FLASH_PECR_PRGLOCK)) != 0;
+}
+
+static void
+ao_flash_pecr_unlock(void)
+{
+ if (!ao_flash_pecr_is_locked())
+ return;
+
+ /* Unlock Data EEPROM and FLASH_PECR register */
+ stm_flash.pekeyr = STM_FLASH_PEKEYR_PEKEY1;
+ stm_flash.pekeyr = STM_FLASH_PEKEYR_PEKEY2;
+ if (ao_flash_pecr_is_locked())
+ ao_panic(AO_PANIC_FLASH);
+}
+
+static void
+ao_flash_pgr_unlock(void)
+{
+ if (!ao_flash_pgr_is_locked())
+ return;
+
+ /* Unlock program memory */
+ stm_flash.prgkeyr = STM_FLASH_PRGKEYR_PRGKEY1;
+ stm_flash.prgkeyr = STM_FLASH_PRGKEYR_PRGKEY2;
+ if (ao_flash_pgr_is_locked())
+ ao_panic(AO_PANIC_FLASH);
+}
+
+static void
+ao_flash_lock(void)
+{
+ stm_flash.pecr |= (1 << STM_FLASH_PECR_OPTLOCK) | (1 << STM_FLASH_PECR_PRGLOCK) | (1 << STM_FLASH_PECR_PELOCK);
+}
+
+static void
+ao_flash_wait_bsy(void)
+{
+ while (stm_flash.sr & (1 << STM_FLASH_SR_BSY))
+ ;
+}
+
+static void __attribute__ ((section(".text.ram"),noinline))
+_ao_flash_erase_page(uint32_t *page)
+{
+ stm_flash.pecr |= (1 << STM_FLASH_PECR_ERASE) | (1 << STM_FLASH_PECR_PROG);
+
+ *page = 0x00000000;
+
+ while (stm_flash.sr & (1 << STM_FLASH_SR_BSY))
+ ;
+}
+
+void
+ao_flash_erase_page(uint32_t *page)
+{
+ ao_flash_pecr_unlock();
+ ao_flash_pgr_unlock();
+
+ _ao_flash_erase_page(page);
+
+ ao_flash_lock();
+}
+
+static void __attribute__ ((section(".text.ram"), noinline))
+_ao_flash_half_page(uint32_t *dst, uint32_t *src)
+{
+ uint8_t i;
+
+ stm_flash.pecr |= (1 << STM_FLASH_PECR_FPRG);
+ stm_flash.pecr |= (1 << STM_FLASH_PECR_PROG);
+
+ while (stm_flash.sr & (1 << STM_FLASH_SR_BSY))
+ ;
+
+ for (i = 0; i < 32; i++) {
+ *dst++ = *src++;
+ }
+
+ while (stm_flash.sr & (1 << STM_FLASH_SR_BSY))
+ ;
+}
+
+void
+ao_flash_page(uint32_t *page, uint32_t *src)
+{
+ uint8_t h;
+
+ ao_flash_erase_page(page);
+ ao_flash_pecr_unlock();
+ ao_flash_pgr_unlock();
+ for (h = 0; h < 2; h++) {
+ _ao_flash_half_page(page, src);
+ page += 32;
+ src += 32;
+ }
+ ao_flash_lock();
+}
diff --git a/src/stm/ao_flash_stm_pins.h b/src/stm/ao_flash_stm_pins.h
new file mode 100644
index 00000000..d157a226
--- /dev/null
+++ b/src/stm/ao_flash_stm_pins.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright © 2013 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.
+ */
+
+#ifndef _AO_FLASH_STM_PINS_H_
+#define _AO_FLASH_STM_PINS_H_
+
+#include <ao_flash_pins.h>
+
+/* PLLVCO = 96MHz (so that USB will work) */
+#define AO_PLLMUL 12
+#define AO_RCC_CFGR_PLLMUL (STM_RCC_CFGR_PLLMUL_12)
+
+/* SYSCLK = 32MHz */
+#define AO_PLLDIV 3
+#define AO_RCC_CFGR_PLLDIV (STM_RCC_CFGR_PLLDIV_3)
+
+/* HCLK = 32MHZ (CPU clock) */
+#define AO_AHB_PRESCALER 1
+#define AO_RCC_CFGR_HPRE_DIV STM_RCC_CFGR_HPRE_DIV_1
+
+/* Run APB1 at HCLK/1 */
+#define AO_APB1_PRESCALER 1
+#define AO_RCC_CFGR_PPRE1_DIV STM_RCC_CFGR_PPRE2_DIV_1
+
+/* Run APB2 at HCLK/1 */
+#define AO_APB2_PRESCALER 1
+#define AO_RCC_CFGR_PPRE2_DIV STM_RCC_CFGR_PPRE2_DIV_1
+
+#endif /* _AO_FLASH_STM_PINS_H_ */
diff --git a/src/stm/ao_interrupt.c b/src/stm/ao_interrupt.c
index a423d8b1..969e6a0f 100644
--- a/src/stm/ao_interrupt.c
+++ b/src/stm/ao_interrupt.c
@@ -18,6 +18,7 @@
#include <ao.h>
#include "stm32l.h"
#include <string.h>
+#include <ao_boot.h>
extern void main(void);
extern char __stack__;
@@ -36,7 +37,19 @@ void stm_ignore_isr(void)
{
}
-void start(void) {
+const void *stm_interrupt_vector[];
+
+void start(void)
+{
+#ifdef AO_BOOT_CHAIN
+ if (ao_boot_check_chain()) {
+#ifdef AO_BOOT_PIN
+ ao_boot_check_pin();
+#endif
+ }
+#endif
+ /* Set interrupt vector table offset */
+ stm_nvic.vto = (uint32_t) &stm_interrupt_vector;
memcpy(&__data_start__, &__text_end__, &__data_end__ - &__data_start__);
memset(&__bss_start__, '\0', &__bss_end__ - &__bss_start__);
main();
diff --git a/src/stm/ao_lcd_stm.c b/src/stm/ao_lcd_stm.c
index 4f2a2242..47ea374e 100644
--- a/src/stm/ao_lcd_stm.c
+++ b/src/stm/ao_lcd_stm.c
@@ -18,6 +18,10 @@
#include <ao.h>
#include <ao_lcd_stm.h>
+#ifndef LCD_DEBUG
+#define LCD_DEBUG 0
+#endif
+
struct ao_lcd_segment {
uint8_t reg;
uint8_t bit;
@@ -271,24 +275,51 @@ ao_lcd_clear(void)
ao_lcd_flush();
}
+#ifdef AO_SEGMENT_MAP
+#if AO_LCD_PER_DIGIT
+static const struct ao_lcd_map {
+ uint8_t com, seg;
+} ao_lcd_map[AO_LCD_DIGITS * AO_LCD_SEGMENTS] = AO_SEGMENT_MAP;
+#else
+static const uint8_t ao_lcd_map[] = AO_SEGMENT_MAP;
+#endif
+#endif
+
void
ao_lcd_set(uint8_t digit, uint8_t segment, uint8_t value)
{
uint8_t n;
+ uint8_t com, seg;
- if (digit >= NCOM)
- digit = NCOM-1;
- if (segment >= NSEG)
- segment = NSEG-1;
+#ifdef AO_SEGMENT_MAP
+#if AO_LCD_PER_DIGIT
+ n = digit * AO_LCD_SEGMENTS + segment;
+ com = ao_lcd_map[n].com;
+ seg = ao_lcd_map[n].seg;
+#else
+ com = digit;
+ seg = ao_lcd_map[segment];
+#endif
+#else
+ com = digit;
+ seg = segment;
+#endif
+ if (com >= NCOM)
+ com = NCOM-1;
+ if (seg >= NSEG)
+ seg = NSEG-1;
- n = (segment >> 5) & 1;
+#if LCD_DEBUG
+ printf ("digit %d segment %d -> com %d seg %d\n", digit, segment, com, seg);
+#endif
+ n = (seg >> 5) & 1;
if (value)
- stm_lcd.ram[digit * 2 + n] |= (1 << (segment & 0x1f));
+ stm_lcd.ram[com * 2 + n] |= (1 << (seg & 0x1f));
else
- stm_lcd.ram[digit * 2 + n] &= ~(1 << (segment & 0x1f));
+ stm_lcd.ram[com * 2 + n] &= ~(1 << (seg & 0x1f));
}
-#if 0
+#if LCD_DEBUG
static void
ao_lcd_stm_seg_set(void)
{
@@ -307,7 +338,7 @@ ao_lcd_stm_seg_set(void)
static const struct ao_cmds ao_lcd_stm_cmds[] = {
{ ao_lcd_stm_seg_set, "s <com> <seg> <value>\0Set LCD segment" },
- { ao_lcd_clear, "C\0Clear LCD" },
+ { ao_lcd_clear, "x\0Clear LCD" },
{ 0, NULL },
};
#endif
@@ -411,7 +442,7 @@ ao_lcd_stm_init(void)
stm_nvic_set_priority(STM_ISR_LCD_POS, AO_STM_NVIC_LOW_PRIORITY);
/* All done */
-#if 0
+#if LCD_DEBUG
ao_cmd_register(ao_lcd_stm_cmds);
#endif
}
diff --git a/src/stm/ao_romconfig.c b/src/stm/ao_romconfig.c
index cbb922ec..5da15072 100644
--- a/src/stm/ao_romconfig.c
+++ b/src/stm/ao_romconfig.c
@@ -20,6 +20,8 @@
AO_ROMCONFIG_SYMBOL (0) uint16_t ao_romconfig_version = AO_ROMCONFIG_VERSION;
AO_ROMCONFIG_SYMBOL (0) uint16_t ao_romconfig_check = ~AO_ROMCONFIG_VERSION;
AO_ROMCONFIG_SYMBOL (0) uint16_t ao_serial_number = 0;
-#ifdef AO_RADIO_CAL_DEFAULT
-AO_ROMCONFIG_SYMBOL (0) uint32_t ao_radio_cal = AO_RADIO_CAL_DEFAULT;
+#ifndef AO_RADIO_CAL_DEFAULT
+#define AO_RADIO_CAL_DEFAULT 0x01020304
#endif
+AO_ROMCONFIG_SYMBOL (0) uint32_t ao_radio_cal = AO_RADIO_CAL_DEFAULT;
+
diff --git a/src/stm/ao_timer.c b/src/stm/ao_timer.c
index 8b7c2327..daf2f400 100644
--- a/src/stm/ao_timer.c
+++ b/src/stm/ao_timer.c
@@ -18,6 +18,11 @@
#include "ao.h"
#include <ao_task.h>
+#ifndef HAS_TICK
+#define HAS_TICK 1
+#endif
+
+#if HAS_TICK
volatile AO_TICK_TYPE ao_tick_count;
AO_TICK_TYPE
@@ -31,14 +36,9 @@ volatile __data uint8_t ao_data_interval = 1;
volatile __data uint8_t ao_data_count;
#endif
-void
-ao_debug_out(char c);
-
-
-void stm_tim6_isr(void)
+void stm_systick_isr(void)
{
- if (stm_tim6.sr & (1 << STM_TIM67_SR_UIF)) {
- stm_tim6.sr = 0;
+ if (stm_systick.csr & (1 << STM_SYSTICK_CSR_COUNTFLAG)) {
++ao_tick_count;
#if HAS_TASK_QUEUE
if (ao_task_alarm_tick && (int16_t) (ao_tick_count - ao_task_alarm_tick) >= 0)
@@ -81,35 +81,20 @@ ao_timer_set_adc_interval(uint8_t interval)
#define TIMER_10kHz ((AO_PCLK1 * TIMER_23467_SCALER) / 10000)
+#define SYSTICK_RELOAD (AO_SYSTICK / 100 - 1)
+
void
ao_timer_init(void)
{
- stm_nvic_set_enable(STM_ISR_TIM6_POS);
- stm_nvic_set_priority(STM_ISR_TIM6_POS, AO_STM_NVIC_CLOCK_PRIORITY);
-
- /* Turn on timer 6 */
- stm_rcc.apb1enr |= (1 << STM_RCC_APB1ENR_TIM6EN);
-
- stm_tim6.psc = TIMER_10kHz;
- stm_tim6.arr = 99;
- stm_tim6.cnt = 0;
-
- /* Enable update interrupt */
- stm_tim6.dier = (1 << STM_TIM67_DIER_UIE);
-
- /* Poke timer to reload values */
- stm_tim6.egr |= (1 << STM_TIM67_EGR_UG);
-
- stm_tim6.cr2 = (STM_TIM67_CR2_MMS_RESET << STM_TIM67_CR2_MMS);
-
- /* And turn it on */
- stm_tim6.cr1 = ((0 << STM_TIM67_CR1_ARPE) |
- (0 << STM_TIM67_CR1_OPM) |
- (1 << STM_TIM67_CR1_URS) |
- (0 << STM_TIM67_CR1_UDIS) |
- (1 << STM_TIM67_CR1_CEN));
+ stm_systick.rvr = SYSTICK_RELOAD;
+ stm_systick.cvr = 0;
+ stm_systick.csr = ((1 << STM_SYSTICK_CSR_ENABLE) |
+ (1 << STM_SYSTICK_CSR_TICKINT) |
+ (STM_SYSTICK_CSR_CLKSOURCE_HCLK_8 << STM_SYSTICK_CSR_CLKSOURCE));
}
+#endif
+
void
ao_clock_init(void)
{
diff --git a/src/stm/ao_usb_stm.c b/src/stm/ao_usb_stm.c
index e29abc87..11dde92e 100644
--- a/src/stm/ao_usb_stm.c
+++ b/src/stm/ao_usb_stm.c
@@ -23,6 +23,16 @@
#define USB_DEBUG_DATA 0
#define USB_ECHO 0
+#ifndef USE_USB_STDIO
+#define USE_USB_STDIO 1
+#endif
+
+#if USE_USB_STDIO
+#define AO_USB_OUT_SLEEP_ADDR (&ao_stdin_ready)
+#else
+#define AO_USB_OUT_SLEEP_ADDR (&ao_usb_out_avail)
+#endif
+
#if USB_DEBUG
#define debug(format, args...) printf(format, ## args);
#else
@@ -35,8 +45,6 @@
#define debug_data(format, args...)
#endif
-struct ao_task ao_usb_task;
-
struct ao_usb_setup {
uint8_t dir_type_recip;
uint8_t request;
@@ -398,81 +406,6 @@ static uint16_t in_count;
static uint16_t out_count;
static uint16_t reset_count;
-void
-stm_usb_lp_isr(void)
-{
- uint32_t istr = stm_usb.istr;
-
- if (istr & (1 << STM_USB_ISTR_CTR)) {
- uint8_t ep = istr & STM_USB_ISTR_EP_ID_MASK;
- uint32_t epr, epr_write;
-
- /* Preserve the SW write bits, don't mess with most HW writable bits,
- * clear the CTR_RX and CTR_TX bits
- */
- epr = stm_usb.epr[ep];
- epr_write = epr;
- epr_write &= STM_USB_EPR_PRESERVE_MASK;
- epr_write |= STM_USB_EPR_INVARIANT;
- epr_write &= ~(1 << STM_USB_EPR_CTR_RX);
- epr_write &= ~(1 << STM_USB_EPR_CTR_TX);
- stm_usb.epr[ep] = epr_write;
-
- switch (ep) {
- case 0:
- ++control_count;
- if (ao_usb_epr_ctr_rx(epr)) {
- if (ao_usb_epr_setup(epr))
- ao_usb_ep0_receive |= AO_USB_EP0_GOT_SETUP;
- else
- ao_usb_ep0_receive |= AO_USB_EP0_GOT_RX_DATA;
- }
- if (ao_usb_epr_ctr_tx(epr))
- ao_usb_ep0_receive |= AO_USB_EP0_GOT_TX_ACK;
- ao_wakeup(&ao_usb_ep0_receive);
- break;
- case AO_USB_OUT_EPR:
- ++out_count;
- if (ao_usb_epr_ctr_rx(epr)) {
- _rx_dbg1("RX ISR", epr);
- ao_usb_out_avail = 1;
- _rx_dbg0("out avail set");
- ao_wakeup(&ao_stdin_ready);
- _rx_dbg0("stdin awoken");
- }
- break;
- case AO_USB_IN_EPR:
- ++in_count;
- _tx_dbg1("TX ISR", epr);
- if (ao_usb_epr_ctr_tx(epr)) {
- ao_usb_in_pending = 0;
- ao_wakeup(&ao_usb_in_pending);
- }
- break;
- case AO_USB_INT_EPR:
- ++int_count;
- if (ao_usb_epr_ctr_tx(epr))
- _ao_usb_set_stat_tx(AO_USB_INT_EPR, STM_USB_EPR_STAT_TX_NAK);
- break;
- }
- return;
- }
-
- if (istr & (1 << STM_USB_ISTR_RESET)) {
- ++reset_count;
- stm_usb.istr &= ~(1 << STM_USB_ISTR_RESET);
- ao_usb_ep0_receive |= AO_USB_EP0_GOT_RESET;
- ao_wakeup(&ao_usb_ep0_receive);
- }
-}
-
-void
-stm_usb_fs_wkup(void)
-{
- /* USB wakeup, just clear the bit for now */
- stm_usb.istr &= ~(1 << STM_USB_ISTR_WKUP);
-}
-
/* The USB memory holds 16 bit values on 32 bit boundaries
* and must be accessed only in 32 bit units. Sigh.
*/
@@ -772,55 +705,117 @@ ao_usb_ep0_setup(void)
ao_usb_ep0_in_start(ao_usb_setup.length);
}
-/* End point 0 receives all of the control messages. */
static void
-ao_usb_ep0(void)
+ao_usb_ep0_handle(uint8_t receive)
{
- uint8_t intx, udint;
-
- debug ("usb task started\n");
- ao_usb_ep0_state = AO_USB_EP0_IDLE;
- for (;;) {
- uint8_t receive;
- ao_arch_critical(
- while (!(receive = ao_usb_ep0_receive))
- ao_sleep(&ao_usb_ep0_receive);
- ao_usb_ep0_receive = 0;
- );
-
- if (receive & AO_USB_EP0_GOT_RESET) {
- debug ("\treset\n");
- ao_usb_set_ep0();
- continue;
- }
- if (receive & AO_USB_EP0_GOT_SETUP) {
- debug ("\tsetup\n");
- ao_usb_ep0_setup();
- }
- if (receive & AO_USB_EP0_GOT_RX_DATA) {
- debug ("\tgot rx data\n");
- if (ao_usb_ep0_state == AO_USB_EP0_DATA_OUT) {
- ao_usb_ep0_fill();
- if (ao_usb_ep0_out_len == 0) {
- ao_usb_ep0_state = AO_USB_EP0_DATA_IN;
- ao_usb_ep0_in_start(0);
- }
+ ao_usb_ep0_receive = 0;
+ if (receive & AO_USB_EP0_GOT_RESET) {
+ debug ("\treset\n");
+ ao_usb_set_ep0();
+ return;
+ }
+ if (receive & AO_USB_EP0_GOT_SETUP) {
+ debug ("\tsetup\n");
+ ao_usb_ep0_setup();
+ }
+ if (receive & AO_USB_EP0_GOT_RX_DATA) {
+ debug ("\tgot rx data\n");
+ if (ao_usb_ep0_state == AO_USB_EP0_DATA_OUT) {
+ ao_usb_ep0_fill();
+ if (ao_usb_ep0_out_len == 0) {
+ ao_usb_ep0_state = AO_USB_EP0_DATA_IN;
+ ao_usb_ep0_in_start(0);
}
}
- if (receive & AO_USB_EP0_GOT_TX_ACK) {
- debug ("\tgot tx ack\n");
-
- /* Wait until the IN packet is received from addr 0
- * before assigning our local address
- */
- if (ao_usb_address_pending)
- ao_usb_set_address(ao_usb_address);
- if (ao_usb_ep0_state == AO_USB_EP0_DATA_IN)
- ao_usb_ep0_flush();
+ }
+ if (receive & AO_USB_EP0_GOT_TX_ACK) {
+ debug ("\tgot tx ack\n");
+
+ /* Wait until the IN packet is received from addr 0
+ * before assigning our local address
+ */
+ if (ao_usb_address_pending)
+ ao_usb_set_address(ao_usb_address);
+ if (ao_usb_ep0_state == AO_USB_EP0_DATA_IN)
+ ao_usb_ep0_flush();
+ }
+}
+
+void
+stm_usb_lp_isr(void)
+{
+ uint32_t istr = stm_usb.istr;
+
+ if (istr & (1 << STM_USB_ISTR_CTR)) {
+ uint8_t ep = istr & STM_USB_ISTR_EP_ID_MASK;
+ uint32_t epr, epr_write;
+
+ /* Preserve the SW write bits, don't mess with most HW writable bits,
+ * clear the CTR_RX and CTR_TX bits
+ */
+ epr = stm_usb.epr[ep];
+ epr_write = epr;
+ epr_write &= STM_USB_EPR_PRESERVE_MASK;
+ epr_write |= STM_USB_EPR_INVARIANT;
+ epr_write &= ~(1 << STM_USB_EPR_CTR_RX);
+ epr_write &= ~(1 << STM_USB_EPR_CTR_TX);
+ stm_usb.epr[ep] = epr_write;
+
+ switch (ep) {
+ case 0:
+ ++control_count;
+ if (ao_usb_epr_ctr_rx(epr)) {
+ if (ao_usb_epr_setup(epr))
+ ao_usb_ep0_receive |= AO_USB_EP0_GOT_SETUP;
+ else
+ ao_usb_ep0_receive |= AO_USB_EP0_GOT_RX_DATA;
+ }
+ if (ao_usb_epr_ctr_tx(epr))
+ ao_usb_ep0_receive |= AO_USB_EP0_GOT_TX_ACK;
+ ao_usb_ep0_handle(ao_usb_ep0_receive);
+ break;
+ case AO_USB_OUT_EPR:
+ ++out_count;
+ if (ao_usb_epr_ctr_rx(epr)) {
+ _rx_dbg1("RX ISR", epr);
+ ao_usb_out_avail = 1;
+ _rx_dbg0("out avail set");
+ ao_wakeup(AO_USB_OUT_SLEEP_ADDR);
+ _rx_dbg0("stdin awoken");
+ }
+ break;
+ case AO_USB_IN_EPR:
+ ++in_count;
+ _tx_dbg1("TX ISR", epr);
+ if (ao_usb_epr_ctr_tx(epr)) {
+ ao_usb_in_pending = 0;
+ ao_wakeup(&ao_usb_in_pending);
+ }
+ break;
+ case AO_USB_INT_EPR:
+ ++int_count;
+ if (ao_usb_epr_ctr_tx(epr))
+ _ao_usb_set_stat_tx(AO_USB_INT_EPR, STM_USB_EPR_STAT_TX_NAK);
+ break;
}
+ return;
+ }
+
+ if (istr & (1 << STM_USB_ISTR_RESET)) {
+ ++reset_count;
+ stm_usb.istr &= ~(1 << STM_USB_ISTR_RESET);
+ ao_usb_ep0_receive |= AO_USB_EP0_GOT_RESET;
+ ao_usb_ep0_handle(ao_usb_ep0_receive);
}
}
+void
+stm_usb_fs_wkup(void)
+{
+ /* USB wakeup, just clear the bit for now */
+ stm_usb.istr &= ~(1 << STM_USB_ISTR_WKUP);
+}
+
/* Queue the current IN buffer for transmission */
static void
_ao_usb_in_send(void)
@@ -951,7 +946,7 @@ ao_usb_getchar(void)
ao_arch_block_interrupts();
while ((c = _ao_usb_pollchar()) == AO_READ_AGAIN)
- ao_sleep(&ao_stdin_ready);
+ ao_sleep(AO_USB_OUT_SLEEP_ADDR);
ao_arch_release_interrupts();
return c;
}
@@ -1071,7 +1066,7 @@ ao_usb_init(void)
ao_usb_enable();
debug ("ao_usb_init\n");
- ao_add_task(&ao_usb_task, ao_usb_ep0, "usb");
+ ao_usb_ep0_state = AO_USB_EP0_IDLE;
#if USB_ECHO
ao_add_task(&ao_usb_echo_task, ao_usb_echo, "usb echo");
#endif
@@ -1079,8 +1074,10 @@ ao_usb_init(void)
ao_cmd_register(&ao_usb_cmds[0]);
#endif
#if !USB_ECHO
+#if USE_USB_STDIO
ao_add_stdio(_ao_usb_pollchar, ao_usb_putchar, ao_usb_flush);
#endif
+#endif
}
#if TX_DBG || RX_DBG
diff --git a/src/stm/registers.ld b/src/stm/registers.ld
index 95a86e35..8318c75a 100644
--- a/src/stm/registers.ld
+++ b/src/stm/registers.ld
@@ -44,6 +44,8 @@ stm_tim4 = 0x40000800;
stm_tim3 = 0x40000400;
stm_tim2 = 0x40000000;
+stm_systick = 0xe000e010;
+
stm_nvic = 0xe000e100;
stm_scb = 0xe000ed00;
diff --git a/src/stm/stm32l.h b/src/stm/stm32l.h
index 1d636037..63bde0f8 100644
--- a/src/stm/stm32l.h
+++ b/src/stm/stm32l.h
@@ -435,6 +435,9 @@ extern struct stm_flash stm_flash;
#define STM_FLASH_PEKEYR_PEKEY1 0x89ABCDEF
#define STM_FLASH_PEKEYR_PEKEY2 0x02030405
+#define STM_FLASH_PRGKEYR_PRGKEY1 0x8C9DAEBF
+#define STM_FLASH_PRGKEYR_PRGKEY2 0x13141516
+
struct stm_rcc {
vuint32_t cr;
vuint32_t icscr;
@@ -811,6 +814,24 @@ extern struct stm_lcd stm_lcd;
#define STM_LCD_CLR_UDDC (3)
#define STM_LCD_CLR_SOFC (1)
+/* The SYSTICK starts at 0xe000e010 */
+
+struct stm_systick {
+ vuint32_t csr;
+ vuint32_t rvr;
+ vuint32_t cvr;
+ vuint32_t calib;
+};
+
+extern struct stm_systick stm_systick;
+
+#define STM_SYSTICK_CSR_ENABLE 0
+#define STM_SYSTICK_CSR_TICKINT 1
+#define STM_SYSTICK_CSR_CLKSOURCE 2
+#define STM_SYSTICK_CSR_CLKSOURCE_HCLK_8 0
+#define STM_SYSTICK_CSR_CLKSOURCE_HCLK 1
+#define STM_SYSTICK_CSR_COUNTFLAG 16
+
/* The NVIC starts at 0xe000e100, so add that to the offsets to find the absolute address */
struct stm_nvic {
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-16 09:23:52 +0000