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cc3200: New I2C API.

This commit is contained in:
Daniel Campora 2015-09-08 15:08:33 +02:00
parent 359b4e9ed9
commit d936317143
2 changed files with 172 additions and 134 deletions
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273
cc3200/mods/pybi2c.c
View File

@ -44,6 +44,8 @@
#include "mpexception.h"
#include "pybsleep.h"
#include "utils.h"
#include "pybpin.h"
#include "pins.h"
/// \moduleref pyb
/// \class I2C - a two-wire serial protocol
@ -77,6 +79,8 @@ typedef struct _pyb_i2c_obj_t {
******************************************************************************/
STATIC pyb_i2c_obj_t pyb_i2c_obj = {.baudrate = 0};
STATIC const mp_obj_t pyb_i2c_def_pin[2] = {&pin_GP13, &pin_GP23};
/******************************************************************************
DEFINE PRIVATE FUNCTIONS
******************************************************************************/
@ -133,9 +137,9 @@ STATIC bool pyb_i2c_transaction(uint cmd) {
return true;
}
STATIC bool pyb_i2c_write(byte devAddr, byte *data, uint len, bool stop) {
STATIC bool pyb_i2c_write(byte addr, byte *data, uint len, bool stop) {
// Set I2C codec slave address
MAP_I2CMasterSlaveAddrSet(I2CA0_BASE, devAddr, false);
MAP_I2CMasterSlaveAddrSet(I2CA0_BASE, addr, false);
// Write the first byte to the controller.
MAP_I2CMasterDataPut(I2CA0_BASE, *data++);
// Initiate the transfer.
@ -157,11 +161,11 @@ STATIC bool pyb_i2c_write(byte devAddr, byte *data, uint len, bool stop) {
return true;
}
STATIC bool pyb_i2c_read(byte devAddr, byte *data, uint len) {
STATIC bool pyb_i2c_read(byte addr, byte *data, uint len) {
uint cmd;
// Set I2C codec slave address
MAP_I2CMasterSlaveAddrSet(I2CA0_BASE, devAddr, true);
MAP_I2CMasterSlaveAddrSet(I2CA0_BASE, addr, true);
// Check if its a single receive or burst receive
if (len > 1) {
@ -208,16 +212,44 @@ STATIC bool pyb_i2c_scan_device(byte devAddr) {
return true;
}
STATIC void pyb_i2c_read_into (mp_arg_val_t *args, vstr_t *vstr) {
// get the buffer to receive into
pyb_buf_get_for_recv(args[1].u_obj, vstr);
// receive the data
if (!pyb_i2c_read(args[0].u_int, (byte *)vstr->buf, vstr->len)) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_operation_failed));
}
}
STATIC void pyb_i2c_readmem_into (mp_arg_val_t *args, vstr_t *vstr) {
// get the buffer to receive into
pyb_buf_get_for_recv(args[2].u_obj, vstr);
// get the addresses
mp_uint_t i2c_addr = args[0].u_int;
mp_uint_t mem_addr = args[1].u_int;
// determine the width of mem_addr (1 or 2 bytes)
mp_uint_t mem_addr_size = args[3].u_int >> 3;
// write the register address to be read from.
if (pyb_i2c_write (i2c_addr, (byte *)&mem_addr, mem_addr_size, false)) {
// Read the specified length of data
if (!pyb_i2c_read (i2c_addr, (byte *)vstr->buf, vstr->len)) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_operation_failed));
}
}
}
/******************************************************************************/
/* Micro Python bindings */
/******************************************************************************/
STATIC void pyb_i2c_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
pyb_i2c_obj_t *self = self_in;
if (self->baudrate > 0) {
mp_printf(print, "<I2C1, I2C.MASTER, baudrate=%u>)", self->baudrate);
}
else {
mp_print_str(print, "<I2C1>");
mp_printf(print, "I2C(0, I2C.MASTER, baudrate=%u)", self->baudrate);
} else {
mp_print_str(print, "I2C(0)");
}
}
@ -225,21 +257,39 @@ STATIC void pyb_i2c_print(const mp_print_t *print, mp_obj_t self_in, mp_print_ki
STATIC const mp_arg_t pyb_i2c_init_args[] = {
{ MP_QSTR_mode, MP_ARG_REQUIRED | MP_ARG_INT, },
{ MP_QSTR_baudrate, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 100000} },
{ MP_QSTR_pins, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
};
#define PYB_I2C_INIT_NUM_ARGS MP_ARRAY_SIZE(pyb_i2c_init_args)
STATIC mp_obj_t pyb_i2c_init_helper(pyb_i2c_obj_t *self, mp_uint_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
STATIC mp_obj_t pyb_i2c_init_helper(pyb_i2c_obj_t *self, mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
// parse args
mp_arg_val_t vals[PYB_I2C_INIT_NUM_ARGS];
mp_arg_parse_all(n_args, args, kw_args, PYB_I2C_INIT_NUM_ARGS, pyb_i2c_init_args, vals);
mp_arg_val_t args[PYB_I2C_INIT_NUM_ARGS];
mp_arg_parse_all(n_args, pos_args, kw_args, PYB_I2C_INIT_NUM_ARGS, pyb_i2c_init_args, args);
// verify that mode is master
if (vals[0].u_int != PYBI2C_MASTER) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, mpexception_value_invalid_arguments));
if (args[0].u_int != PYBI2C_MASTER) {
goto invalid_args;
}
// make sure the baudrate is between the valid range
self->baudrate = MIN(MAX(vals[1].u_int, PYBI2C_MIN_BAUD_RATE_HZ), PYBI2C_MAX_BAUD_RATE_HZ);
self->baudrate = MIN(MAX(args[1].u_int, PYBI2C_MIN_BAUD_RATE_HZ), PYBI2C_MAX_BAUD_RATE_HZ);
// assign the pins
mp_obj_t pins_o = args[2].u_obj;
if (pins_o != mp_const_none) {
mp_obj_t *pins;
mp_uint_t n_pins;
if (pins_o == MP_OBJ_NULL) {
// use the default pins
pins = (mp_obj_t *)pyb_i2c_def_pin;
} else {
mp_obj_get_array(pins_o, &n_pins, &pins);
if (n_pins != 2) {
goto invalid_args;
}
}
pin_assign_pins_af (pins, n_pins, PIN_TYPE_STD_PU, PIN_FN_I2C, 0);
}
// init the I2C bus
i2c_init(self);
@ -248,6 +298,9 @@ STATIC mp_obj_t pyb_i2c_init_helper(pyb_i2c_obj_t *self, mp_uint_t n_args, const
pybsleep_add ((const mp_obj_t)self, (WakeUpCB_t)i2c_init);
return mp_const_none;
invalid_args:
nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, mpexception_value_invalid_arguments));
}
/// \classmethod \constructor(bus, ...)
@ -292,18 +345,6 @@ STATIC mp_obj_t pyb_i2c_deinit(mp_obj_t self_in) {
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_i2c_deinit_obj, pyb_i2c_deinit);
/// \method is_ready(addr)
STATIC mp_obj_t pyb_i2c_is_ready(mp_obj_t self_in, mp_obj_t i2c_addr_o) {
mp_uint_t i2c_addr = mp_obj_get_int(i2c_addr_o);
for (int i = 0; i < 7; i++) {
if (pyb_i2c_scan_device(i2c_addr)) {
return mp_const_true;
}
}
return mp_const_false;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(pyb_i2c_is_ready_obj, pyb_i2c_is_ready);
/// \method scan()
STATIC mp_obj_t pyb_i2c_scan(mp_obj_t self_in) {
mp_obj_t list = mp_obj_new_list(0, NULL);
@ -319,153 +360,147 @@ STATIC mp_obj_t pyb_i2c_scan(mp_obj_t self_in) {
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_i2c_scan_obj, pyb_i2c_scan);
/// \method send()
STATIC const mp_arg_t pyb_i2c_send_args[] = {
{ MP_QSTR_send, MP_ARG_REQUIRED | MP_ARG_OBJ, },
{ MP_QSTR_addr, MP_ARG_INT, {.u_int = 0} },
{ MP_QSTR_timeout, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 5000} },
STATIC mp_obj_t pyb_i2c_readfrom(mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
STATIC const mp_arg_t pyb_i2c_readfrom_args[] = {
{ MP_QSTR_addr, MP_ARG_REQUIRED | MP_ARG_OBJ, },
{ MP_QSTR_nbytes, MP_ARG_REQUIRED | MP_ARG_INT, },
};
// parse pos_args
mp_arg_val_t args[MP_ARRAY_SIZE(pyb_i2c_readfrom_args)];
mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(pyb_i2c_readfrom_args), pyb_i2c_readfrom_args, args);
vstr_t vstr;
pyb_i2c_read_into(args, &vstr);
// return the received data
return mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(pyb_i2c_readfrom_obj, 2, pyb_i2c_readfrom);
STATIC mp_obj_t pyb_i2c_readfrom_into(mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
STATIC const mp_arg_t pyb_i2c_readfrom_into_args[] = {
{ MP_QSTR_addr, MP_ARG_REQUIRED | MP_ARG_INT, },
{ MP_QSTR_buf, MP_ARG_REQUIRED | MP_ARG_OBJ, },
};
#define PYB_I2C_SEND_NUM_ARGS MP_ARRAY_SIZE(pyb_i2c_send_args)
STATIC mp_obj_t pyb_i2c_send(mp_uint_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
// parse args
mp_arg_val_t vals[PYB_I2C_SEND_NUM_ARGS];
mp_arg_parse_all(n_args - 1, args + 1, kw_args, PYB_I2C_SEND_NUM_ARGS, pyb_i2c_send_args, vals);
mp_arg_val_t args[MP_ARRAY_SIZE(pyb_i2c_readfrom_into_args)];
mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(pyb_i2c_readfrom_into_args), pyb_i2c_readfrom_into_args, args);
vstr_t vstr;
pyb_i2c_read_into(args, &vstr);
// return the number of bytes received
return mp_obj_new_int(vstr.len);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(pyb_i2c_readfrom_into_obj, 2, pyb_i2c_readfrom_into);
STATIC mp_obj_t pyb_i2c_writeto(mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
STATIC const mp_arg_t pyb_i2c_writeto_args[] = {
{ MP_QSTR_addr, MP_ARG_REQUIRED | MP_ARG_INT, },
{ MP_QSTR_buf, MP_ARG_REQUIRED | MP_ARG_OBJ, },
{ MP_QSTR_stop, MP_ARG_KW_ONLY | MP_ARG_BOOL, {.u_bool = true} },
};
// parse args
mp_arg_val_t args[MP_ARRAY_SIZE(pyb_i2c_writeto_args)];
mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(pyb_i2c_writeto_args), pyb_i2c_writeto_args, args);
// get the buffer to send from
mp_buffer_info_t bufinfo;
uint8_t data[1];
pyb_buf_get_for_send(vals[0].u_obj, &bufinfo, data);
pyb_buf_get_for_send(args[1].u_obj, &bufinfo, data);
// send the data
if (!pyb_i2c_write(vals[1].u_int, bufinfo.buf, bufinfo.len, true)) {
if (!pyb_i2c_write(args[0].u_int, bufinfo.buf, bufinfo.len, args[2].u_bool)) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_operation_failed));
}
return mp_const_none;
// return the number of bytes written
return mp_obj_new_int(bufinfo.len);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(pyb_i2c_send_obj, 1, pyb_i2c_send);
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(pyb_i2c_writeto_obj, 2, pyb_i2c_writeto);
/// \method recv()
STATIC const mp_arg_t pyb_i2c_recv_args[] = {
{ MP_QSTR_recv, MP_ARG_REQUIRED | MP_ARG_OBJ, },
{ MP_QSTR_addr, MP_ARG_INT, {.u_int = 0} },
{ MP_QSTR_timeout, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 5000} },
STATIC mp_obj_t pyb_i2c_readfrom_mem(mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
STATIC const mp_arg_t pyb_i2c_readfrom_mem_args[] = {
{ MP_QSTR_addr, MP_ARG_REQUIRED | MP_ARG_OBJ, },
{ MP_QSTR_memaddr, MP_ARG_REQUIRED | MP_ARG_INT, },
{ MP_QSTR_nbytes, MP_ARG_REQUIRED | MP_ARG_INT, },
{ MP_QSTR_addrsize, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 8} },
};
#define PYB_I2C_RECV_NUM_ARGS MP_ARRAY_SIZE(pyb_i2c_recv_args)
STATIC mp_obj_t pyb_i2c_recv(mp_uint_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
// parse args
mp_arg_val_t vals[PYB_I2C_RECV_NUM_ARGS];
mp_arg_parse_all(n_args - 1, args + 1, kw_args, PYB_I2C_RECV_NUM_ARGS, pyb_i2c_recv_args, vals);
mp_arg_val_t args[MP_ARRAY_SIZE(pyb_i2c_readfrom_mem_args)];
mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(pyb_i2c_readfrom_mem_args), pyb_i2c_readfrom_mem_args, args);
// get the buffer to receive into
vstr_t vstr;
mp_obj_t o_ret = pyb_buf_get_for_recv(vals[0].u_obj, &vstr);
// receive the data
if (!pyb_i2c_read(vals[1].u_int, (byte *)vstr.buf, vstr.len)) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_operation_failed));
}
// return the received data
if (o_ret != MP_OBJ_NULL) {
return o_ret;
}
else {
pyb_i2c_readmem_into (args, &vstr);
return mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr);
}
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(pyb_i2c_recv_obj, 1, pyb_i2c_recv);
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(pyb_i2c_readfrom_mem_obj, 3, pyb_i2c_readfrom_mem);
/// \method mem_read()
STATIC const mp_arg_t pyb_i2c_mem_read_args[] = {
{ MP_QSTR_data, MP_ARG_REQUIRED | MP_ARG_OBJ, },
{ MP_QSTR_addr, MP_ARG_REQUIRED | MP_ARG_INT, {.u_int = 0} },
{ MP_QSTR_memaddr, MP_ARG_REQUIRED | MP_ARG_INT, {.u_int = 0} },
{ MP_QSTR_timeout, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 5000} },
{ MP_QSTR_addr_size, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 8} },
STATIC const mp_arg_t pyb_i2c_readfrom_mem_into_args[] = {
{ MP_QSTR_addr, MP_ARG_REQUIRED | MP_ARG_OBJ, },
{ MP_QSTR_memaddr, MP_ARG_REQUIRED | MP_ARG_INT, },
{ MP_QSTR_buf, MP_ARG_REQUIRED | MP_ARG_OBJ, },
{ MP_QSTR_addrsize, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 8} },
};
#define PYB_I2C_MEM_READ_NUM_ARGS MP_ARRAY_SIZE(pyb_i2c_mem_read_args)
STATIC mp_obj_t pyb_i2c_mem_read(mp_uint_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
STATIC mp_obj_t pyb_i2c_readfrom_mem_into(mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
// parse args
mp_arg_val_t vals[PYB_I2C_MEM_READ_NUM_ARGS];
mp_arg_parse_all(n_args - 1, args + 1, kw_args, PYB_I2C_MEM_READ_NUM_ARGS, pyb_i2c_mem_read_args, vals);
mp_arg_val_t args[MP_ARRAY_SIZE(pyb_i2c_readfrom_mem_into_args)];
mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(pyb_i2c_readfrom_mem_into_args), pyb_i2c_readfrom_mem_into_args, args);
// get the buffer to read into
vstr_t vstr;
mp_obj_t o_ret = pyb_buf_get_for_recv(vals[0].u_obj, &vstr);
// get the addresses
mp_uint_t i2c_addr = vals[1].u_int;
mp_uint_t mem_addr = vals[2].u_int;
// determine the width of mem_addr (1 or 2 bytes)
mp_uint_t mem_addr_size = vals[3].u_int >> 3;
// Write the register address to be read from.
if (pyb_i2c_write (i2c_addr, (byte *)&mem_addr, mem_addr_size, false)) {
// Read the specified length of data
if (pyb_i2c_read (i2c_addr, (byte *)vstr.buf, vstr.len)) {
// return the read data
if (o_ret != MP_OBJ_NULL) {
return o_ret;
} else {
return mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr);
}
}
pyb_i2c_readmem_into (args, &vstr);
return mp_obj_new_int(vstr.len);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(pyb_i2c_readfrom_mem_into_obj, 3, pyb_i2c_readfrom_mem_into);
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_operation_failed));
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(pyb_i2c_mem_read_obj, 1, pyb_i2c_mem_read);
/// \method mem_write()
STATIC mp_obj_t pyb_i2c_mem_write(mp_uint_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
// parse args (same as mem_read)
mp_arg_val_t vals[PYB_I2C_MEM_READ_NUM_ARGS];
mp_arg_parse_all(n_args - 1, args + 1, kw_args, PYB_I2C_MEM_READ_NUM_ARGS, pyb_i2c_mem_read_args, vals);
STATIC mp_obj_t pyb_i2c_writeto_mem(mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
// parse args
mp_arg_val_t args[MP_ARRAY_SIZE(pyb_i2c_readfrom_mem_into_args)];
mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(pyb_i2c_readfrom_mem_into_args), pyb_i2c_readfrom_mem_into_args, args);
// get the buffer to write from
mp_buffer_info_t bufinfo;
uint8_t data[1];
pyb_buf_get_for_send(vals[0].u_obj, &bufinfo, data);
pyb_buf_get_for_send(args[2].u_obj, &bufinfo, data);
// get the addresses
mp_uint_t i2c_addr = vals[1].u_int;
mp_uint_t mem_addr = vals[2].u_int;
mp_uint_t i2c_addr = args[0].u_int;
mp_uint_t mem_addr = args[1].u_int;
// determine the width of mem_addr (1 or 2 bytes)
mp_uint_t mem_addr_size = vals[3].u_int >> 3;
mp_uint_t mem_addr_size = args[3].u_int >> 3;
// Write the register address to write to.
// write the register address to write to.
if (pyb_i2c_write (i2c_addr, (byte *)&mem_addr, mem_addr_size, false)) {
// Write the specified length of data
if (pyb_i2c_write (i2c_addr, bufinfo.buf, bufinfo.len, true)) {
return mp_const_none;
// return the number of bytes written
return mp_obj_new_int(bufinfo.len);
}
}
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_operation_failed));
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(pyb_i2c_mem_write_obj, 1, pyb_i2c_mem_write);
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(pyb_i2c_writeto_mem_obj, 3, pyb_i2c_writeto_mem);
STATIC const mp_map_elem_t pyb_i2c_locals_dict_table[] = {
// instance methods
{ MP_OBJ_NEW_QSTR(MP_QSTR_init), (mp_obj_t)&pyb_i2c_init_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_deinit), (mp_obj_t)&pyb_i2c_deinit_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_is_ready), (mp_obj_t)&pyb_i2c_is_ready_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_scan), (mp_obj_t)&pyb_i2c_scan_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_send), (mp_obj_t)&pyb_i2c_send_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_recv), (mp_obj_t)&pyb_i2c_recv_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_mem_read), (mp_obj_t)&pyb_i2c_mem_read_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_mem_write), (mp_obj_t)&pyb_i2c_mem_write_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_readfrom), (mp_obj_t)&pyb_i2c_readfrom_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_readfrom_into), (mp_obj_t)&pyb_i2c_readfrom_into_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_writeto), (mp_obj_t)&pyb_i2c_writeto_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_readfrom_mem), (mp_obj_t)&pyb_i2c_readfrom_mem_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_readfrom_mem_into), (mp_obj_t)&pyb_i2c_readfrom_mem_into },
{ MP_OBJ_NEW_QSTR(MP_QSTR_writeto_mem), (mp_obj_t)&pyb_i2c_writeto_mem_obj },
// class constants
/// \constant MASTER - for initialising the bus to master mode
{ MP_OBJ_NEW_QSTR(MP_QSTR_MASTER), MP_OBJ_NEW_SMALL_INT(PYBI2C_MASTER) },
};

19
cc3200/qstrdefsport.h
View File

@ -154,19 +154,22 @@ Q(RX_ANY)
Q(I2C)
Q(mode)
Q(baudrate)
Q(pins)
Q(addr)
Q(data)
Q(timeout)
Q(nbytes)
Q(buf)
Q(stop)
Q(memaddr)
Q(addr_size)
Q(addrsize)
Q(init)
Q(deinit)
Q(is_ready)
Q(scan)
Q(send)
Q(recv)
Q(mem_read)
Q(mem_write)
Q(readfrom)
Q(readfrom_into)
Q(writeto)
Q(readfrom_mem)
Q(readfrom_mem_into)
Q(writeto_mem)
Q(MASTER)
// for ADC class