summaryrefslogtreecommitdiff
path: root/keyboards/vitamins_included/i2c.h
diff options
context:
space:
mode:
authorMikkel Jeppesen2018-05-09 18:14:30 +0200
committerDrashna Jaelre2018-05-09 09:14:30 -0700
commit00596d55e34c003d55a530366bedfb2ea467bedc (patch)
tree95e02d77026987b9c34da8b7740f6d8dea5ba840 /keyboards/vitamins_included/i2c.h
parent749916e6e233f66b554925f120c29e2ce353e90e (diff)
Added propper support for Lets split vitamins (#2559)
* Added support for the upcomming Lets_split vitamins included * Updated readme * Corrected header of readme * Enabled RGB * Broke everything * broke some more shit * Revert "broke some more shit" This reverts commit 6ad68e6269cc0d04c16564ce9598dfd3db1e23c1. * Revert "Broke everything" This reverts commit feeee4e40db15a726f2292b6a9406ef45c1e54a7. * Fixed USB detection, and RGB on slave * started modifying readme, to use msys2 * Added support for the upcomming Lets_split vitamins included * Updated readme * Corrected header of readme * Enabled RGB * Broke everything * broke some more shit * Revert "broke some more shit" This reverts commit 6ad68e6269cc0d04c16564ce9598dfd3db1e23c1. * Revert "Broke everything" This reverts commit feeee4e40db15a726f2292b6a9406ef45c1e54a7. * Fixed USB detection, and RGB on slave * started modifying readme, to use msys2 * Updated readme to reflect use of msys2 Added avrdude to msys path * added avrdude option to msys installer * Removed extra installation of avrdude * Renamed to vitamins_included and implemented drashnas changes * Fixed include guard * Fixed some includes, and added avrdude target to docs. * Fixed default keyboard
Diffstat (limited to 'keyboards/vitamins_included/i2c.h')
-rw-r--r--keyboards/vitamins_included/i2c.h50
1 files changed, 50 insertions, 0 deletions
diff --git a/keyboards/vitamins_included/i2c.h b/keyboards/vitamins_included/i2c.h
new file mode 100644
index 000000000..739d134be
--- /dev/null
+++ b/keyboards/vitamins_included/i2c.h
@@ -0,0 +1,50 @@
+#ifndef I2C_H
+#define I2C_H
+
+#include <stdint.h>
+#include "split_util.h"
+
+#ifndef F_CPU
+#define F_CPU 16000000UL
+#endif
+
+#define I2C_READ 1
+#define I2C_WRITE 0
+
+#define I2C_ACK 1
+#define I2C_NACK 0
+
+#define SLAVE_BUFFER_SIZE 0x10
+
+// i2c SCL clock frequency
+#define SCL_CLOCK 400000L
+
+extern volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE];
+
+void i2c_master_init(void);
+uint8_t i2c_master_start(uint8_t address);
+void i2c_master_stop(void);
+uint8_t i2c_master_write(uint8_t data);
+uint8_t i2c_master_read(int);
+void i2c_reset_state(void);
+void i2c_slave_init(uint8_t address);
+
+
+static inline unsigned char i2c_start_read(unsigned char addr) {
+ return i2c_master_start((addr << 1) | I2C_READ);
+}
+
+static inline unsigned char i2c_start_write(unsigned char addr) {
+ return i2c_master_start((addr << 1) | I2C_WRITE);
+}
+
+// from SSD1306 scrips
+extern unsigned char i2c_rep_start(unsigned char addr);
+extern void i2c_start_wait(unsigned char addr);
+extern unsigned char i2c_readAck(void);
+extern unsigned char i2c_readNak(void);
+extern unsigned char i2c_read(unsigned char ack);
+
+#define i2c_read(ack) (ack) ? i2c_readAck() : i2c_readNak();
+
+#endif