From 7a540fb4ab547fcb6bc6b56057ab8968fab12390 Mon Sep 17 00:00:00 2001
From: Karl Palsson <karlp@tweak.net.au>
Date: Wed, 22 Mar 2017 22:50:37 +0000
Subject: f0 working with repeated start properly.  need to squish lots of this

like, you left the f0 makefiles out earlier, and it's all boring history
anwyay
---
 tests/i2c-master/main-stm32f072-disco.c | 101 ++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 tests/i2c-master/main-stm32f072-disco.c

(limited to 'tests/i2c-master/main-stm32f072-disco.c')

diff --git a/tests/i2c-master/main-stm32f072-disco.c b/tests/i2c-master/main-stm32f072-disco.c
new file mode 100644
index 0000000..8818665
--- /dev/null
+++ b/tests/i2c-master/main-stm32f072-disco.c
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2017 Karl Palsson <karlp@tweak.net.au>
+ */
+
+#include <libopencm3/cm3/nvic.h>
+#include <libopencm3/stm32/crs.h>
+#include <libopencm3/stm32/gpio.h>
+#include <libopencm3/stm32/i2c.h>
+#include <libopencm3/stm32/rcc.h>
+#include <libopencm3/stm32/usart.h>
+
+#include <stdio.h>
+#include "hw.h"
+#include "i2c-master.h"
+
+#define LED_DISCO_GREEN_PORT GPIOC
+#define LED_DISCO_GREEN_PIN GPIO9
+
+
+
+struct hw_detail hw_details = {
+	.periph = I2C1,
+	.periph_rcc = RCC_I2C1,
+	.periph_rst = RST_I2C1,
+	.pins = GPIO8 | GPIO9, /* our external i2c device on I2c1 */
+	.port = GPIOB,
+	.port_rcc = RCC_GPIOB,
+	.trigger_rcc = RCC_GPIOB,
+	.trigger_port = GPIOB,
+	.trigger_pin = GPIO12,
+	.i2c_clock_megahz = 48, // FIXME
+};
+
+
+static
+void setup_usart(void)
+{
+	uint32_t dev = USART1;
+	rcc_periph_clock_enable(RCC_USART1);
+	rcc_periph_clock_enable(RCC_GPIOA);
+	gpio_mode_setup(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO9);
+	gpio_set_af(GPIOA, GPIO_AF1, GPIO9);	
+	
+	usart_set_baudrate(dev, 115200);
+	usart_set_databits(dev, 8);
+	usart_set_parity(dev, USART_PARITY_NONE);
+	usart_set_stopbits(dev, USART_CR2_STOP_1_0BIT);
+	usart_set_mode(dev, USART_MODE_TX);
+	usart_set_flow_control(dev, USART_FLOWCONTROL_NONE);
+
+	/* Finally enable the USART. */
+	usart_enable(dev);
+}
+
+/**
+ * Setup any gpios or anything hardware specific.
+ * Should _only_ be things that can't be done in shared i2cm_init!
+ */
+static void i2cm_hw_init(void)
+{
+	/* trigger pin gpio */
+	rcc_periph_clock_enable(hw_details.trigger_rcc);
+	gpio_mode_setup(hw_details.trigger_port, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, hw_details.trigger_pin);
+
+	/* i2c control lines */
+	rcc_periph_clock_enable(hw_details.port_rcc);
+	gpio_mode_setup(hw_details.port, GPIO_MODE_AF, GPIO_PUPD_NONE, hw_details.pins);
+	gpio_set_output_options(hw_details.port, GPIO_OTYPE_OD, GPIO_OSPEED_HIGH, hw_details.pins);
+	gpio_set_af(hw_details.port, GPIO_AF1, hw_details.pins);
+}
+
+
+static void setup(void)
+{
+	setup_usart();
+	printf("hi guys!\n");
+	i2cm_hw_init();
+	i2cm_init();
+}
+
+int main(void)
+{
+	int i;
+	rcc_clock_setup_in_hsi48_out_48mhz();
+	/* green led for ticking */
+	rcc_periph_clock_enable(RCC_GPIOC);
+	gpio_mode_setup(LED_DISCO_GREEN_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, LED_DISCO_GREEN_PORT);
+	gpio_set(LED_DISCO_GREEN_PORT, LED_DISCO_GREEN_PORT);
+
+	setup();
+
+	while (1) {
+		i2cm_task();
+		gpio_toggle(LED_DISCO_GREEN_PORT, LED_DISCO_GREEN_PIN);
+		for (i = 0; i < 0x800000; i++) { /* Wait a bit. */
+                        __asm__("NOP");
+                }
+	}
+
+}
+
-- 
cgit