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test
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test
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@@ -1 +1,115 @@
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WindowsパソコンとRaspberry Pi PicoをUSB接続しました。Raspberry Pi Picoで読み取った値はC言語のprintfでTeratermに出力することが出来たのですが、Teratermで値を入力して、Raspberry Pi Picoで読み取るのはscanfですることが出来ませんでした。USB通信で送られた値を読み取るRaspberry Pi Pico/C言語のライブラリはありますか？
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```ここに言語を入力
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#include <stdio.h>
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#include "pico/stdlib.h"
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#include "hardware/spi.h"
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#include "hardware/gpio.h"
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#include "hardware/adc.h"
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#define PIN_SCK 2
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12
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#define PIN_MOSI 3
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#define PIN_MISO 4
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#define PIN_CS 5
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#define SPI_PORT spi0
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static inline void cs_select() {
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asm volatile("nop \n nop \n nop");
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gpio_put(PIN_CS, 0); // Active low
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asm volatile("nop \n nop \n nop");
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}
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static inline void cs_deselect() {
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asm volatile("nop \n nop \n nop");
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gpio_put(PIN_CS, 1);
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asm volatile("nop \n nop \n nop");
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}
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void setup_SPI(){
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// This example will use SPI0 at 50kHz.
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spi_init(SPI_PORT, 500000);
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gpio_set_function(PIN_MISO, GPIO_FUNC_SPI);
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gpio_set_function(PIN_SCK, GPIO_FUNC_SPI);
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gpio_set_function(PIN_MOSI, GPIO_FUNC_SPI);
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// Chip select is active-low, so we'll initialise it to a driven-high state
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gpio_init(PIN_CS);
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gpio_set_dir(PIN_CS, GPIO_OUT);
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gpio_put(PIN_CS, 1);
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}
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int readADC(){
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uint16_t writeData = 0x0000;
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uint8_t buffer[2];
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cs_deselect();
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sleep_us(1);
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cs_select();
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sleep_us(1);
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cs_deselect();
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sleep_us(10);
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cs_select();
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spi_read_blocking(SPI_PORT, writeData, buffer, 2);
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return (buffer[0]<<8 | buffer[1]);
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}
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int main() {
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stdio_init_all();
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setup_SPI();
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sleep_ms(5000);
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printf("\nHello, AD7685 Reading raw data from registers via SPI...\n");
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sleep_ms(10000);
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printf("n =\n");
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sleep_ms(5000);
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85
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int i;
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int n;
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float nAdc[300];
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float sum1, ave1;
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scanf("%d",&n);
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sleep_ms(5000);
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sum1 =0;
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for (int i =0; i<n;i++)
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{
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nAdc[i] = 5.0 / 65535.0 *readADC();
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printf("%5.9lfV\n", (double)(nAdc[i]));
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sum1 = sum1 + nAdc[i];
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sleep_ms(10);
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sleep_ms(250);
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}
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ave1 = sum1/n;
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printf("average = %.9f\n", ave1);
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111
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112
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113
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return 0;
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114
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}
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115
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```
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