// 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/hal/spi/spi_soft.hh" #include "ucoo/hal/gpio/gpio.hh" #include "ucoo/utils/delay.hh" #include "ucoo/arch/arch.hh" #include "ucoo/base/test/test.hh" #include #include #include int main (int argc, const char **argv) { ucoo::arch_init (argc, argv); ucoo::Stream &ts = ucoo::test_stream (); // Use connection to LIS302DL device on discovery board revision MB997B. // Revision MB997C uses a different device. rcc_peripheral_enable_clock (&RCC_AHB1ENR, RCC_AHB1ENR_IOPAEN | RCC_AHB1ENR_IOPEEN); ucoo::Gpio ss (GPIOE, 3); ss.set (); ss.output (); ucoo::Gpio sck (GPIOA, 5), mosi (GPIOA, 7), miso (GPIOA, 6); ucoo::SpiSoftMaster spi (sck, mosi, miso); spi.enable (1000000, ucoo::SPI_MODE_3); // Loop with simple IU. char buf[64]; unsigned int r; int8_t x, y, z; while (1) { ucoo::delay_ms (200); // Read X, Y, Z. ss.reset (); spi.send (0xe9); x = spi.recv (); spi.recv (); y = spi.recv (); spi.recv (); z = spi.recv (); ss.set (); ucoo::delay_ns (100); r = snprintf (buf, sizeof (buf), "x: %4d, y: %4d, z: %4d\r", x, y, z); r = std::min (sizeof (buf) - 1, r); ts.write (buf, r); // Simple UI. while (ts.poll ()) { char c = ts.getc (); switch (c) { case '?': static const char help[] = "\n? - help\n" "w - who am I\n" "o - turn on\n" "f - turn off\n"; ts.write (help, sizeof (help)); break; case 'w': { // Read Who am I register. ss.reset (); spi.send (0x8f); char rsp = spi.recv (); ss.set (); ucoo::delay_ns (100); // Report result. r = snprintf (buf, sizeof (buf), "\nI am 0x%02x\n", static_cast (rsp)); r = std::min (sizeof (buf) - 1, r); ts.write (buf, r); } break; case 'o': case 'f': { char cmd[] = { 0x20, (char) (c == 'o' ? 0x47 : 0x07) }; ss.reset (); spi.send (cmd, sizeof (cmd)); ss.set (); ucoo::delay_ns (100); } break; } } } }