altos/nucleo-32: Add basic support for STM32F042 Nucleo-32 board

This hooks up the LED, USB and the USART.

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

diff --git a/src/nucleao-32/Makefile b/src/nucleao-32/Makefile
new file mode 100644 (file)
index 0000000..a160fd2
--- /dev/null
+++ b/src/nucleao-32/Makefile
@@ -0,0 +1,71 @@
+#
+# AltOS build
+#
+#
+
+include ../stmf0/Makefile.defs
+
+INC = \
+       ao.h \
+       ao_arch.h \
+       ao_arch_funcs.h \
+       ao_boot.h \
+       ao_pins.h \
+       ao_product.h \
+       ao_task.h \
+       stm32f0.h \
+       Makefile
+
+ALTOS_SRC = \
+       ao_boot_chain.c \
+       ao_interrupt.c \
+       ao_product.c \
+       ao_romconfig.c \
+       ao_cmd.c \
+       ao_config.c \
+       ao_task.c \
+       ao_led.c \
+       ao_dma_stm.c \
+       ao_stdio.c \
+       ao_panic.c \
+       ao_timer.c \
+       ao_mutex.c \
+       ao_usb_stm.c \
+       ao_serial_stm.c \
+       ao_exti_stm.c
+
+PRODUCT=Nucleo-32
+PRODUCT_DEF=-DNUCLEO
+IDPRODUCT=0x000a
+
+CFLAGS = $(PRODUCT_DEF) $(STMF0_CFLAGS) -Os -g
+
+PROGNAME=nucleo-32
+PROG=$(PROGNAME)-$(VERSION).elf
+HEX=$(PROGNAME)-$(VERSION).ihx
+
+SRC=$(ALTOS_SRC) ao_nucleo.c
+OBJ=$(SRC:.c=.o)
+
+all: $(PROG) $(HEX)
+
+$(PROG): Makefile $(OBJ) altos.ld
+       $(call quiet,CC) $(LDFLAGS) $(CFLAGS) -o $(PROG) $(OBJ) $(LIBS)
+
+$(OBJ): $(INC)
+
+ao_product.h: ao-make-product.5c ../Version
+       $(call quiet,NICKLE,$<) $< -m altusmetrum.org -i $(IDPRODUCT) -p $(PRODUCT) -v $(VERSION) > $@
+
+load: $(PROG)
+       stm-load $(PROG)
+
+distclean:     clean
+
+clean:
+       rm -f *.o $(PROGNAME)-*.elf $(PROGNAME)-*.ihx
+       rm -f ao_product.h
+
+install:
+
+uninstall:

diff --git a/src/nucleao-32/ao_nucleo.c b/src/nucleao-32/ao_nucleo.c
new file mode 100644 (file)
index 0000000..cda889c
--- /dev/null
+++ b/src/nucleao-32/ao_nucleo.c
@@ -0,0 +1,63 @@
+/*
+ * Copyright © 2016 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, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ */
+
+#include <ao.h>
+
+static uint16_t        blink_delay, blink_running;
+
+static void blink(void) {
+       blink_running = 1;
+       while (blink_delay) {
+               ao_led_on(AO_LED_GREEN);
+               ao_delay(blink_delay);
+               ao_led_off(AO_LED_GREEN);
+               ao_delay(blink_delay);
+       }
+       blink_running = 0;
+       ao_wakeup(&blink_running);
+       ao_exit();
+}
+
+struct ao_task blink_task;
+
+static void blink_cmd() {
+       ao_cmd_decimal();
+       blink_delay = ao_cmd_lex_i;
+       if (blink_delay && !blink_running)
+               ao_add_task(&blink_task, blink, "blink");
+       if (!blink_delay)
+               while (blink_running)
+                       ao_sleep(&blink_running);
+}
+
+static const struct ao_cmds blink_cmds[] = {
+       { blink_cmd,    "b <delay, 0 off>\0Blink the green LED" },
+       { 0, 0 }
+};
+
+void main(void)
+{
+       ao_led_init(LEDS_AVAILABLE);
+       ao_clock_init();
+       ao_task_init();
+       ao_timer_init();
+       ao_dma_init();
+       ao_usb_init();
+       ao_serial_init();
+       ao_cmd_init();
+       ao_cmd_register(blink_cmds);
+       ao_start_scheduler();
+}
+
+

diff --git a/src/nucleao-32/ao_pins.h b/src/nucleao-32/ao_pins.h
new file mode 100644 (file)
index 0000000..7620017
--- /dev/null
+++ b/src/nucleao-32/ao_pins.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright © 2016 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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_PINS_H_
+#define _AO_PINS_H_
+
+#define LED_PORT_ENABLE        STM_RCC_AHBENR_IOPBEN
+#define LED_PORT       (&stm_gpiob)
+#define LED_PIN_GREEN  3
+#define AO_LED_GREEN   (1 << LED_PIN_GREEN)
+#define AO_LED_PANIC   AO_LED_GREEN
+
+#define LEDS_AVAILABLE (AO_LED_GREEN)
+
+#define AO_POWER_MANAGEMENT    0
+
+/* 48MHz clock based on USB */
+#define AO_HSI48       1
+
+/* HCLK = 48MHz */
+#define AO_AHB_PRESCALER       1
+#define AO_RCC_CFGR_HPRE_DIV   STM_RCC_CFGR_HPRE_DIV_1
+
+/* APB = 48MHz */
+#define AO_APB_PRESCALER       1
+#define AO_RCC_CFGR_PPRE_DIV   STM_RCC_CFGR_PPRE_DIV_1
+
+#define HAS_USB                                1
+#define AO_USB_DIRECTIO                        0
+#define AO_PA11_PA12_RMP               0
+#define HAS_BEEP                       0
+
+#define IS_FLASH_LOADER        0
+
+#define HAS_SERIAL_2           1
+#define SERIAL_2_PA2_PA15      1
+#define USE_SERIAL_2_FLOW      0
+#define USE_SERIAL_2_STDIN     1
+#define DELAY_SERIAL_2_STDIN   0
+
+#endif /* _AO_PINS_H_ */

diff --git a/src/nucleao-32/flash-loader/Makefile b/src/nucleao-32/flash-loader/Makefile
new file mode 100644 (file)
index 0000000..2392e99
--- /dev/null
+++ b/src/nucleao-32/flash-loader/Makefile
@@ -0,0 +1,8 @@
+#
+# AltOS flash loader build
+#
+#
+
+TOPDIR=../..
+HARDWARE=nucleo-32
+include $(TOPDIR)/stmf0/Makefile-flash.defs

diff --git a/src/nucleao-32/flash-loader/ao_pins.h b/src/nucleao-32/flash-loader/ao_pins.h
new file mode 100644 (file)
index 0000000..8bdbdb1
--- /dev/null
+++ b/src/nucleao-32/flash-loader/ao_pins.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright © 2016 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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_PINS_H_
+#define _AO_PINS_H_
+
+#include <ao_flash_stm_pins.h>
+
+/* Pin D3, which is PB0 */
+
+#define AO_BOOT_PIN                    1
+#define AO_BOOT_APPLICATION_GPIO       stm_gpiob
+#define AO_BOOT_APPLICATION_PIN                0
+#define AO_BOOT_APPLICATION_VALUE      1
+#define AO_BOOT_APPLICATION_MODE       AO_EXTI_MODE_PULL_UP
+
+/* USB */
+#define HAS_USB                        1
+#define AO_USB_DIRECTIO                0
+#define AO_PA11_PA12_RMP       0
+
+#endif /* _AO_PINS_H_ */