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authorNicolas Schodet2015-06-03 13:46:44 +0200
committerNicolas Schodet2019-10-07 00:44:44 +0200
commit574480980dcffbfa7cd6dbe71e88253eb4c9feba (patch)
tree5f1c1261341a7c2a56de01d8c6d0815b164be8ba /ucoo/hal/i2c/i2c_hard.stm32.hh
parentd415a0646e874848cd06482c5d57916cca5cff4a (diff)
Rename ucoolib modules directory from ucoolib to ucoo
Diffstat (limited to 'ucoo/hal/i2c/i2c_hard.stm32.hh')
-rw-r--r--ucoo/hal/i2c/i2c_hard.stm32.hh91
1 files changed, 91 insertions, 0 deletions
diff --git a/ucoo/hal/i2c/i2c_hard.stm32.hh b/ucoo/hal/i2c/i2c_hard.stm32.hh
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+++ b/ucoo/hal/i2c/i2c_hard.stm32.hh
@@ -0,0 +1,91 @@
+#ifndef ucoo_hal_i2c_i2c_hard_stm32_hh
+#define ucoo_hal_i2c_i2c_hard_stm32_hh
+// ucoolib - Microcontroller object oriented library. {{{
+//
+// Copyright (C) 2013 Nicolas Schodet
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+//
+// }}}
+#include "ucoo/intf/i2c.hh"
+
+#include "config/hal/i2c.hh"
+
+namespace ucoo {
+
+/// I2C interface, using dedicated hardware.
+class I2cHard : public I2c
+{
+ public:
+ /// Constructor for the Nth I2C.
+ I2cHard (int n);
+ /// Shutdown.
+ ~I2cHard ();
+ /// Enable and setup
+ void enable (int speed = 100000);
+ /// Disable.
+ void disable ();
+ /// See I2cMaster::send.
+ void send (uint8_t addr, const char *buf, int count);
+ /// See I2cMaster::recv.
+ void recv (uint8_t addr, char *buf, int count);
+ /// See I2cMaster::status.
+ int status ();
+ /// See I2cMaster::wait.
+ int wait ();
+ /// See I2cSlave::register_data.
+ void register_data (uint8_t addr, DataHandler &data_handler);
+ /// Event ISR.
+ static void ev_isr (int n);
+ /// Error ISR.
+ static void er_isr (int n);
+ private:
+ /// Start a master transfer, send or recv, depending on addr LSB.
+ void transfer (uint8_t addr, char *buf, int count);
+ private:
+ /// I2C number.
+ int n_;
+ /// Is it enabled?
+ bool enabled_;
+ /// Slave address.
+ uint8_t slave_addr_;
+ /// Handler called to source or sink data for slave exchanges.
+ DataHandler *slave_data_handler_;
+ /// Slave buffer.
+ char slave_buf_[UCOO_CONFIG_HAL_I2C_SLAVE_BUFFER_SIZE];
+ /// Current buffer count (bytes to send), or buffer size (available room).
+ int buf_count_;
+ /// Current buffer index (position to read byte to send or write received
+ /// byte).
+ int buf_index_;
+ /// Master access granted.
+ bool master_;
+ /// Current master transfer status.
+ int master_status_;
+ /// Current master transfer buffer.
+ char *master_buf_;
+ /// Current master transfer size, copied to buf_count_ when active.
+ int master_count_;
+ /// Current master transfer slave address, LSB is set for receiver mode.
+ uint8_t master_slave_addr_;
+};
+
+} // namespace ucoo
+
+#endif // ucoo_hal_i2c_i2c_hard_stm32_hh