i2c-master: working on l1 too.

Needs retest on f4.  then ready to move to new hardware

1 files changed, 80 insertions, 0 deletions

diff --git a/tests/i2c-master/main-stm32l1-generic.c b/tests/i2c-master/main-stm32l1-generic.c
new file mode 100644
index 0000000..874cf7d
--- /dev/null
+++ b/tests/i2c-master/main-stm32l1-generic.c
@@ -0,0 +1,80 @@
+/*
+ * Feb 2017 Karl Palsson <karlp@tweak.net.au>
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <libopencm3/cm3/nvic.h>
+#include <libopencm3/stm32/gpio.h>
+#include <libopencm3/stm32/i2c.h>
+#include <libopencm3/stm32/rcc.h>
+
+#include "trace.h"
+
+#include "hw.h"
+#include "i2c-master.h"
+
+#define LED_DISCO_GREEN_PORT GPIOB
+#define LED_DISCO_GREEN_PIN GPIO7
+
+
+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 = GPIO13,
+	.i2c_clock_megahz = 32,
+};
+
+
+/* provided in board files please*/
+/**
+ * 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_10MHZ, hw_details.pins);
+	gpio_set_af(hw_details.port, GPIO_AF4, hw_details.pins);
+}
+
+static void setup(void)
+{
+	printf("hi guys!\n");
+	i2cm_hw_init();
+	i2cm_init();
+}
+
+
+int main(void)
+{
+	int i, j;
+	rcc_clock_setup_pll(&rcc_clock_config[RCC_CLOCK_VRANGE1_HSI_PLL_32MHZ]);
+	/* green led for ticking */
+	rcc_periph_clock_enable(RCC_GPIOB);
+	gpio_mode_setup(LED_DISCO_GREEN_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE,
+		LED_DISCO_GREEN_PIN);
+	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");
+                }
+	}
+	return 0;
+}