From f391796dddbcc0a265b22cb101b41eafa34694af Mon Sep 17 00:00:00 2001
From: Karl Palsson <karlp@tweak.net.au>
Date: Thu, 22 Feb 2018 08:51:06 +0000
Subject: uart-basic: initial hacks for dut board.

but oh joy,  solder bridges are wrong for serial to hw1 host by defualt
:(
---
 tests/uart-basic/Makefile.dut-stm32l073rz | 26 +++++++++++
 tests/uart-basic/main-dut-stm32l073rz.c   | 78 +++++++++++++++++++++++++++++++
 2 files changed, 104 insertions(+)
 create mode 100644 tests/uart-basic/Makefile.dut-stm32l073rz
 create mode 100644 tests/uart-basic/main-dut-stm32l073rz.c

diff --git a/tests/uart-basic/Makefile.dut-stm32l073rz b/tests/uart-basic/Makefile.dut-stm32l073rz
new file mode 100644
index 0000000..d8575d9
--- /dev/null
+++ b/tests/uart-basic/Makefile.dut-stm32l073rz
@@ -0,0 +1,26 @@
+# This is just a makefile.
+# Consider it released into the public domain, or, where not available,
+# available under your choice of BSD2clause, MIT, X11, ISC or Apache2 licenses
+# Karl Palsson <karlp@tweak.net.au>
+BOARD = dut-stm32l073rz
+PROJECT = uart-basic-$(BOARD)
+BUILD_DIR = bin-$(BOARD)
+
+SHARED_DIR = ../../shared
+
+CFILES = main-$(BOARD).c
+CFILES += uart-basic.c
+
+VPATH += $(SHARED_DIR)
+
+INCLUDES += $(patsubst %,-I%, . $(SHARED_DIR))
+
+OPENCM3_DIR=../../libopencm3/
+
+### This section can go to an arch shared rules eventually...
+DEVICE=stm32l073rz
+#OOCD_INTERFACE = stlink-v2
+#OOCD_TARGET = stm32l0x
+OOCD_FILE = ../../openocd/openocd.$(BOARD).cfg
+
+include ../../rules.mk
diff --git a/tests/uart-basic/main-dut-stm32l073rz.c b/tests/uart-basic/main-dut-stm32l073rz.c
new file mode 100644
index 0000000..17a68da
--- /dev/null
+++ b/tests/uart-basic/main-dut-stm32l073rz.c
@@ -0,0 +1,78 @@
+/*
+ * Oct 2017 Karl Palsson <karlp@tweak.net.au>
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <libopencm3/cm3/nvic.h>
+#include <libopencm3/stm32/crs.h>
+#include <libopencm3/stm32/gpio.h>
+#include <libopencm3/stm32/rcc.h>
+#include <libopencm3/stm32/syscfg.h>
+#include <libopencm3/stm32/usart.h>
+
+#include "uart-basic.h"
+
+#define LED_NUC_RCC RCC_GPIOA
+#define LED_NUC_PORT GPIOA
+#define LED_NUC_PIN GPIO5
+
+void usart2_isr(void)
+{
+	ub_irq_handler();
+}
+
+static void setup_rcc_hack(void)
+{
+	/* FIXME L0 doesn't have rcc setup helpers (yet) */
+	rcc_osc_on(RCC_HSI16);
+	rcc_wait_for_osc_ready(RCC_HSI16);
+	rcc_set_sysclk_source(RCC_HSI16);
+
+	/* ok, we manually poked around, let the lib know */
+	rcc_apb1_frequency = rcc_apb2_frequency = 16e6;
+}
+
+static void board_init(void)
+{
+	rcc_periph_clock_enable(RCC_GPIOA);
+	gpio_mode_setup(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO2 | GPIO3);
+	/* usart is AF4 */
+	gpio_set_af(GPIOA, GPIO_AF4, GPIO2 | GPIO3);
+}
+
+int main(void)
+{
+	int i;
+	int j = 0;
+	setup_rcc_hack();
+	board_init();
+	struct ub_hw ub = {
+		.uart = USART2,
+		.uart_nvic = NVIC_USART2_IRQ,
+		.uart_rcc = RCC_USART2,
+	};
+	ub_init(&ub);
+	printf("hi guys!\n");
+	/* green led for ticking */
+	rcc_periph_clock_enable(LED_NUC_RCC);
+	gpio_mode_setup(LED_NUC_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE,
+		LED_NUC_PIN);
+
+
+	while (1) {
+		gpio_toggle(LED_NUC_PORT, LED_NUC_PIN);
+
+		for (i = 0; i < 0x40000; i++) { /* Wait a bit. */
+			__asm__("NOP");
+		}
+		ub_task();
+		gpio_toggle(LED_NUC_PORT, LED_NUC_PIN);
+		for (i = 0; i < 0x40000; i++) { /* Wait a bit. */
+			__asm__("NOP");
+		}
+	}
+
+	return 0;
+}
-- 
cgit