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-rw-r--r--app/i2c2.c132
1 files changed, 0 insertions, 132 deletions
diff --git a/app/i2c2.c b/app/i2c2.c
deleted file mode 100644
index 77701cc..0000000
--- a/app/i2c2.c
+++ /dev/null
@@ -1,132 +0,0 @@
-#include "project.h"
-
-
-#define GPIO_SCL GPIOA
-#define GPIO_SDA GPIOB
-#define SCL GPIO5
-#define SDA GPIO11
-
-#define I2C_BB_DELAY do { delay_us(1); } while (0)
-
-int
-i2c2_bb (int scl, int sda)
-{
- if (scl)
- gpio_set (GPIO_SCL, SCL);
- else
- gpio_clear (GPIO_SCL, SCL);
- if (sda)
- gpio_set (GPIO_SDA, SDA);
- else
- gpio_clear (GPIO_SDA, SDA);
-
- return ! !(gpio_get (GPIO_SDA, SDA) & SDA);
-
-}
-
-
-void
-i2c2_bb_start (void)
-{
- i2c2_bb (1, 1);
- I2C_BB_DELAY;
- i2c2_bb (1, 0);
- I2C_BB_DELAY;
- i2c2_bb (0, 0);
- I2C_BB_DELAY;
-}
-
-
-void
-i2c2_bb_stop (void)
-{
- i2c2_bb (0, 0);
- I2C_BB_DELAY;
- i2c2_bb (1, 0);
- I2C_BB_DELAY;
- i2c2_bb (1, 1);
- I2C_BB_DELAY;
-}
-
-int
-i2c2_bb_send_data (uint8_t v)
-{
- int c;
-
-
- for (c = 0x80; c; c >>= 1)
- {
- i2c2_bb (0, c & v);
- I2C_BB_DELAY;
- i2c2_bb (1, c & v);
- I2C_BB_DELAY;
- i2c2_bb (0, c & v);
- I2C_BB_DELAY;
- }
-
- i2c2_bb (0, 1);
- I2C_BB_DELAY;
- i2c2_bb (1, 1);
- I2C_BB_DELAY;
- c = i2c2_bb (1, 1);
- i2c2_bb (0, 1);
-
- return c;
-}
-
-
-int
-i2c2_bb_start_transaction (uint8_t a, int wnr)
-{
- int ret;
-
- i2c2_bb_start ();
- ret = i2c2_bb_send_data (a << 1 | ! !(wnr));
-
-
- return ret;
-}
-
-#if 0
-void
-i2c2_bb_scan (void)
-{
- int i, r;
-
- return;
- i2cp_reset ();
-
- printf ("Probing bus\r\n");
- for (i = 0; i < 128; ++i)
- {
- while (i2cp_lock ());
- i2cp_start ();
- i2cp_abort_start ();
- i2cp_stop ();
- i2cp_abort_stop ();
- r = i2cp_start_transaction (i, I2C_WRITE);
- i2cp_stop ();
- i2cp_unlock ();
- if (!r)
- printf ("Found device at address 0x%x\r\n", i);
- usart1_drain ();
- }
- printf ("Done\r\n");
- i2cp_reset ();
-
-}
-#endif
-
-void
-i2c2_bb_init (void)
-{
- gpio_set_mode (GPIO_SCL, GPIO_MODE_OUTPUT_50_MHZ,
- GPIO_CNF_OUTPUT_OPENDRAIN, SCL);
- gpio_set_mode (GPIO_SDA, GPIO_MODE_OUTPUT_50_MHZ,
- GPIO_CNF_OUTPUT_OPENDRAIN, SDA);
-
- i2c2_bb_start ();
- i2c2_bb_stop ();
-
-
-}