altos/stm32f4: Add STM32F413 disco board support

Discovery development board

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

diff --git a/src/stm32f4-disco/Makefile b/src/stm32f4-disco/Makefile
new file mode 100644 (file)
index 0000000..2d912b2
--- /dev/null
+++ b/src/stm32f4-disco/Makefile
@@ -0,0 +1,30 @@
+include ../stm32f4/Makefile-raw.defs
+
+ALTOS_SRC = \
+       ao_interrupt.c \
+       ao_panic.c \
+       ao_timer.c
+
+CFLAGS = $(STM32F4_CFLAGS)
+
+PROG=stm32f4-disco-$(VERSION)
+ELF=$(PROG).elf
+IHX=$(PROG).ihx
+
+SRC=$(ALTOS_SRC) ao_disco.c
+OBJ=$(SRC:.c=.o)
+MAP=$(PROG).map
+
+all: $(ELF) $(IHX)
+
+$(ELF): Makefile $(OBJ)
+       $(call quiet,CC) $(LDFLAGS) $(CFLAGS) -o $@ $(OBJ) -Wl,-M=$(MAP) $(LIBS)
+
+distclean:     clean
+
+clean:
+       rm -f *.o *.elf *.ihx
+
+install:
+
+uninstall:

diff --git a/src/stm32f4-disco/ao_disco.c b/src/stm32f4-disco/ao_disco.c
new file mode 100644 (file)
index 0000000..efbed94
--- /dev/null
+++ b/src/stm32f4-disco/ao_disco.c
@@ -0,0 +1,37 @@
+/*
+ * Copyright © 2018 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>
+
+void main(void)
+{
+       float           x;
+       int             r = 1;
+       int             g = 0;
+
+       ao_clock_init();
+
+       ao_timer_init();
+
+       ao_enable_output(LED_GREEN_PORT, LED_GREEN_PIN, 0);
+       ao_enable_output(LED_RED_PORT, LED_RED_PIN, 1);
+       for (;;) {
+               ao_gpio_set(LED_GREEN_PORT, LED_GREEN_PIN, g);
+               ao_gpio_set(LED_RED_PORT, LED_RED_PIN, r);
+               g ^= 1;
+               r ^= 1;
+               for (x = 0.0f; x < 100000.0f; x = x + 0.1f)
+                       ao_arch_nop();
+       }
+}

diff --git a/src/stm32f4-disco/ao_pins.h b/src/stm32f4-disco/ao_pins.h
new file mode 100644 (file)
index 0000000..3bbace1
--- /dev/null
+++ b/src/stm32f4-disco/ao_pins.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright © 2018 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.
+ */
+#ifndef _AO_PINS_H_
+#define _AO_PINS_H_
+
+#define HAS_BEEP       0
+
+#define B_USER_PORT    (&stm_gpioa)
+#define B_USER_PIN     0
+
+#define LED_GREEN_PORT (&stm_gpioc)
+#define LED_GREEN_PIN  5
+#define LED_RED_PORT   (&stm_gpioe)
+#define LED_RED_PIN    3
+
+#define AO_HSE         8000000 /* fed from st/link processor */
+#define AO_HSE_BYPASS  1       /* no xtal, directly fed */
+
+#define AO_PLL_M       8       /* down to 1MHz */
+
+#define AO_PLL1_N      192     /* up to 192MHz */
+#define AO_PLL1_P      2       /* down to 96MHz */
+#define AO_PLL1_Q      4       /* down to 48MHz for USB and SDIO */
+
+#define AO_AHB_PRESCALER       1
+#define AO_RCC_CFGR_HPRE_DIV   STM_RCC_CFGR_HPRE_DIV_1
+
+#define AO_APB1_PRESCALER      1
+#define AO_RCC_CFGR_PPRE1_DIV  STM_RCC_CFGR_PPRE1_DIV_1
+#define AO_APB2_PRESCALER      1
+#define AO_RCC_CFGR_PPRE2_DIV  STM_RCC_CFGR_PPRE2_DIV_1
+
+#endif /* _AO_PINS_H_ */