BV RS-232: use generic UART library
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e9b88c49b3
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753ae0992e
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@ -34,6 +34,7 @@
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#include "menu.h" // menu definitions
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#include "busvoodoo_global.h" // BusVoodoo definitions
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#include "busvoodoo_oled.h" // OLED utilities
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#include "busvoodoo_uart_generic.h" // generic UART mode
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#include "busvoodoo_rs232.h" // own definitions
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/** @defgroup busvoodoo_rs232_usart USART peripheral used for RS-232 communication, using an RS-232 transceiver
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@ -42,26 +43,30 @@
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#define BUSVOODOO_RS232_USART 2 /**< USART peripheral */
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/** @} */
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/** mode setup stage */
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static enum busvoodoo_rs232_setting_t {
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BUSVOODOO_RS232_SETTING_NONE,
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BUSVOODOO_RS232_SETTING_BAUDRATE,
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BUSVOODOO_RS232_SETTING_DATABITS,
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BUSVOODOO_RS232_SETTING_PARITY,
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BUSVOODOO_RS232_SETTING_STOPBITS,
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BUSVOODOO_RS232_SETTING_HWFLOWCTL,
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BUSVOODOO_RS232_SETTING_DONE,
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} busvoodoo_rs232_setting = BUSVOODOO_RS232_SETTING_NONE; /**< current mode setup stage */
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/** RS-232 baud rate (in bps) */
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static uint32_t busvoodoo_rs232_baudrate = 115200;
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/** RS-232 data bits */
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static uint8_t busvoodoo_rs232_databits = 8;
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/** RS-232 parity setting */
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static uint32_t busvoodoo_rs232_parity = USART_PARITY_NONE;
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/** RS-232 stop bits setting */
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static uint32_t busvoodoo_rs232_stopbits = USART_STOPBITS_1;
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/** RS-232 hardware flow control setting (true = with hardware flow control, false = without hardware flow control */
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static bool busvoodoo_rs232_hwflowctl = false;
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/** RS-232 specific methods that will be called by the generic methods */
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static const struct busvoodoo_uart_generic_specific_t busvoodoo_uart_generic_rs232 = {
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.usart = USART(BUSVOODOO_RS232_USART),
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.usart_rcc = RCC_USART(BUSVOODOO_RS232_USART),
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.usart_rst = RST_USART(BUSVOODOO_RS232_USART),
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.multidrive = false,
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.tx_port = USART_TX_PORT(BUSVOODOO_RS232_USART),
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.tx_pin = USART_TX_PIN(BUSVOODOO_RS232_USART),
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.tx_rcc = RCC_USART_PORT(BUSVOODOO_RS232_USART),
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.tx_pre = NULL,
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.tx_post = NULL,
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.rx_port = USART_RX_PORT(BUSVOODOO_RS232_USART),
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.rx_pin = USART_RX_PIN(BUSVOODOO_RS232_USART),
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.rx_rcc = RCC_USART_PORT(BUSVOODOO_RS232_USART),
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.rx_pre = NULL,
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.rx_post = NULL,
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.hwflowctl = true,
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.rts_port = USART_RTS_PORT(BUSVOODOO_RS232_USART),
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.rts_pin = USART_RTS_PIN(BUSVOODOO_RS232_USART),
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.rts_rcc = RCC_USART_PORT(BUSVOODOO_RS232_USART),
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.cts_port = USART_CTS_PORT(BUSVOODOO_RS232_USART),
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.cts_pin = USART_CTS_PIN(BUSVOODOO_RS232_USART),
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.cts_rcc = RCC_USART_PORT(BUSVOODOO_RS232_USART),
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};
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/** setup RS-232 mode
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* @param[out] prefix terminal prompt prefix
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@ -72,153 +77,28 @@ static bool busvoodoo_rs232_setup(char** prefix, const char* line)
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{
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bool complete = false; // is the setup complete
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if (NULL==line) { // first call
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busvoodoo_rs232_setting = BUSVOODOO_RS232_SETTING_NONE; // re-start configuration
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busvoodoo_uart_generic_configure(&busvoodoo_uart_generic_rs232); // provide the RS-232 specific information
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}
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switch (busvoodoo_rs232_setting) {
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case BUSVOODOO_RS232_SETTING_NONE:
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snprintf(busvoodoo_global_string, LENGTH(busvoodoo_global_string), "baud rate in bps (1-2000000) [%u]", busvoodoo_rs232_baudrate);
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*prefix = busvoodoo_global_string; // ask for baud rate
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busvoodoo_rs232_setting = BUSVOODOO_RS232_SETTING_BAUDRATE;
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break;
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case BUSVOODOO_RS232_SETTING_BAUDRATE:
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if (NULL==line || 0==strlen(line)) { // use default setting
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busvoodoo_rs232_setting = BUSVOODOO_RS232_SETTING_DATABITS; // go to next setting
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} else { // setting provided
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uint32_t baudrate = atoi(line); // parse setting
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if (baudrate>0 && baudrate<=2000000) { // check setting
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busvoodoo_rs232_baudrate = baudrate; // remember setting
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busvoodoo_rs232_setting = BUSVOODOO_RS232_SETTING_DATABITS; // go to next setting
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}
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}
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if (BUSVOODOO_RS232_SETTING_DATABITS==busvoodoo_rs232_setting) { // if next setting
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snprintf(busvoodoo_global_string, LENGTH(busvoodoo_global_string), "data bits (8-9) [%u]", busvoodoo_rs232_databits); // prepare next setting
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*prefix = busvoodoo_global_string; // display next setting
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}
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break;
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case BUSVOODOO_RS232_SETTING_DATABITS:
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if (NULL==line || 0==strlen(line)) { // use default setting
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busvoodoo_rs232_setting = BUSVOODOO_RS232_SETTING_PARITY; // go to next setting
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} else { // setting provided
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uint8_t databits = atoi(line); // parse setting
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if (8==databits || 9==databits) { // check setting
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busvoodoo_rs232_databits = databits; // remember setting
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busvoodoo_rs232_setting = BUSVOODOO_RS232_SETTING_PARITY; // go to next setting
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}
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}
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if (BUSVOODOO_RS232_SETTING_PARITY==busvoodoo_rs232_setting) { // if next setting
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printf("1) none\n");
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printf("2) even\n");
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printf("3) odd\n");
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snprintf(busvoodoo_global_string, LENGTH(busvoodoo_global_string), "parity (1,2,3) [%c]", USART_PARITY_NONE==busvoodoo_rs232_parity ? '1' : (USART_PARITY_EVEN==busvoodoo_rs232_parity ? '2' : '3')); // prepare next setting
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*prefix = busvoodoo_global_string; // display next setting
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}
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break;
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case BUSVOODOO_RS232_SETTING_PARITY:
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if (NULL==line || 0==strlen(line)) { // use default setting
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busvoodoo_rs232_setting = BUSVOODOO_RS232_SETTING_STOPBITS; // go to next setting
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} else if (1==strlen(line)) { // setting provided
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if ('1'==line[0]) { // no parity
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busvoodoo_rs232_parity = USART_PARITY_NONE;
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busvoodoo_rs232_setting = BUSVOODOO_RS232_SETTING_STOPBITS; // go to next setting
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} else if ('2'==line[0]) { // even parity
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busvoodoo_rs232_parity = USART_PARITY_EVEN;
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busvoodoo_rs232_setting = BUSVOODOO_RS232_SETTING_STOPBITS; // go to next setting
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} else if ('3'==line[0]) { // odd parity
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busvoodoo_rs232_parity = USART_PARITY_ODD;
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busvoodoo_rs232_setting = BUSVOODOO_RS232_SETTING_STOPBITS; // go to next setting
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}
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}
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if (BUSVOODOO_RS232_SETTING_STOPBITS==busvoodoo_rs232_setting) { // if next setting
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printf("1) 0.5\n");
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printf("2) 1\n");
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printf("3) 1.5\n");
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printf("4) 2\n");
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snprintf(busvoodoo_global_string, LENGTH(busvoodoo_global_string), "stop bits (1,2,3,4) [%s]", USART_STOPBITS_0_5==busvoodoo_rs232_stopbits ? "0.5" : (USART_STOPBITS_1==busvoodoo_rs232_stopbits ? "1" : (USART_STOPBITS_1_5==busvoodoo_rs232_stopbits ? "1.5" : "2.0"))); // prepare next setting
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*prefix = busvoodoo_global_string; // display next setting
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}
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break;
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case BUSVOODOO_RS232_SETTING_STOPBITS:
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if (NULL==line || 0==strlen(line)) { // use default setting
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busvoodoo_rs232_setting = BUSVOODOO_RS232_SETTING_HWFLOWCTL; // go to next setting
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} else if (1==strlen(line)) { // setting provided
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if ('1'==line[0]) { // 0.5 stop bits
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busvoodoo_rs232_stopbits = USART_STOPBITS_0_5; // remember setting
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busvoodoo_rs232_setting = BUSVOODOO_RS232_SETTING_HWFLOWCTL; // go to next setting
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} else if ('2'==line[0]) { // 1 stop bits
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busvoodoo_rs232_stopbits = USART_STOPBITS_1; // remember setting
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busvoodoo_rs232_setting = BUSVOODOO_RS232_SETTING_HWFLOWCTL; // go to next setting
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} else if ('3'==line[0]) { // 1.5 stop bits
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busvoodoo_rs232_stopbits = USART_STOPBITS_1_5; // remember setting
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busvoodoo_rs232_setting = BUSVOODOO_RS232_SETTING_HWFLOWCTL; // go to next setting
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} else if ('4'==line[0]) { // 2 stop bits
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busvoodoo_rs232_stopbits = USART_STOPBITS_2; // remember setting
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busvoodoo_rs232_setting = BUSVOODOO_RS232_SETTING_HWFLOWCTL; // go to next setting
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}
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}
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if (BUSVOODOO_RS232_SETTING_HWFLOWCTL==busvoodoo_rs232_setting) { // if next setting
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printf("1) no flow control\n");
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printf("2) RTS/CTS hardware flow control\n");
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snprintf(busvoodoo_global_string, LENGTH(busvoodoo_global_string), "flow control (1,2) [%c]", busvoodoo_rs232_hwflowctl ? '2' : '1'); // prepare next setting
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*prefix = busvoodoo_global_string; // display next setting
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}
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break;
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case BUSVOODOO_RS232_SETTING_HWFLOWCTL:
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if (NULL==line || 0==strlen(line)) { // use default setting
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busvoodoo_rs232_setting = BUSVOODOO_RS232_SETTING_DONE; // go to next setting
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} else if (1==strlen(line)) { // setting provided
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if ('1'==line[0] || '2'==line[0]) { // setting provided
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busvoodoo_rs232_hwflowctl = ('2'==line[0]); // remember setting
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busvoodoo_rs232_setting = BUSVOODOO_RS232_SETTING_DONE; // go to next setting
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}
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}
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if (BUSVOODOO_RS232_SETTING_DONE==busvoodoo_rs232_setting) { // we have all settings, configure RS-232
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rcc_periph_clock_enable(RCC_AFIO); // enable clock for USART alternate function
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rcc_periph_clock_enable(RCC_USART(BUSVOODOO_RS232_USART)); // enable clock for USART peripheral
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usart_set_baudrate(USART(BUSVOODOO_RS232_USART), busvoodoo_rs232_baudrate); // set baud rate
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usart_set_databits(USART(BUSVOODOO_RS232_USART), busvoodoo_rs232_databits); // set data bits
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usart_set_parity(USART(BUSVOODOO_RS232_USART), busvoodoo_rs232_parity); // set parity
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usart_set_stopbits(USART(BUSVOODOO_RS232_USART), busvoodoo_rs232_stopbits); // set stop bits
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if (busvoodoo_rs232_hwflowctl) {
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usart_set_flow_control(USART(BUSVOODOO_RS232_USART), USART_FLOWCONTROL_RTS_CTS); // set RTS/CTS flow control
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} else {
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usart_set_flow_control(USART(BUSVOODOO_RS232_USART), USART_FLOWCONTROL_NONE); // set no flow control
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}
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usart_set_mode(USART(BUSVOODOO_RS232_USART), USART_MODE_TX_RX); // full-duplex communication
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rcc_periph_clock_enable(RCC_USART_PORT(BUSVOODOO_RS232_USART)); // enable clock for USART GPIO peripheral
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gpio_set_mode(USART_TX_PORT(BUSVOODOO_RS232_USART), GPIO_MODE_OUTPUT_10_MHZ, GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, USART_TX_PIN(BUSVOODOO_RS232_USART)); // setup GPIO pin USART transmit
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gpio_set_mode(USART_RX_PORT(BUSVOODOO_RS232_USART), GPIO_MODE_INPUT, GPIO_CNF_INPUT_FLOAT, USART_RX_PIN(BUSVOODOO_RS232_USART)); // setup GPIO pin USART receive (no need to pull since the transceiver will drive it)
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if (busvoodoo_rs232_hwflowctl) { // use open drain drive mode
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gpio_set_mode(USART_RTS_PORT(BUSVOODOO_RS232_USART), GPIO_MODE_OUTPUT_10_MHZ, GPIO_CNF_OUTPUT_ALTFN_OPENDRAIN, USART_RTS_PIN(BUSVOODOO_RS232_USART)); // setup GPIO pin USART transmit
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gpio_set_mode(USART_CTS_PORT(BUSVOODOO_RS232_USART), GPIO_MODE_INPUT, GPIO_CNF_INPUT_FLOAT, USART_CTS_PIN(BUSVOODOO_RS232_USART)); // setup GPIO pin USART receive (no need to pull since the transceiver will drive it)
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}
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gpio_clear(GPIO(BUSVOODOO_RS232_EN_PORT), GPIO(BUSVOODOO_RS232_EN_PIN)); // set low to enable RS-232 transceiver receiver
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gpio_set(GPIO(BUSVOODOO_RS232_SHDN_PORT), GPIO(BUSVOODOO_RS232_SHDN_PIN)); // set high to enable RS-232 transceiver transmitter
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usart_enable(USART(BUSVOODOO_RS232_USART)); // enable USART
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busvoodoo_led_blue_off(); // disable blue LED since there is no activity
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busvoodoo_rs232_setting = BUSVOODOO_RS232_SETTING_NONE; // restart settings next time
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*prefix = "RS-232"; // display mode
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busvoodoo_oled_text_left(*prefix); // set mode title on OLED display
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char* pinout_io[10] = {"GND", "5V", "3V3", "LV", NULL, NULL, NULL, NULL, NULL, NULL}; // RS-232 mode I/O pinout
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for (uint8_t i=0; i<LENGTH(pinout_io) && i<LENGTH(busvoodoo_global_pinout_io); i++) {
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busvoodoo_global_pinout_io[i] = pinout_io[i]; // set pin names
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}
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char* pinout_rscan[5] = {"HV", "Rx", "Tx", NULL, NULL}; // RS-232 mode RS/CAN pinout
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if (busvoodoo_rs232_hwflowctl) { // hardware flow control is used
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pinout_rscan[3] = "RTS"; // update pin name
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pinout_rscan[4] = "CTS"; // update pin name
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}
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for (uint8_t i=0; i<LENGTH(pinout_rscan) && i<LENGTH(busvoodoo_global_pinout_rscan); i++) {
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busvoodoo_global_pinout_rscan[i] = pinout_rscan[i]; // set pin names
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}
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char* pinout[10] = {pinout_rscan[0], pinout_io[0], pinout_rscan[1], pinout_io[2], pinout_rscan[2], pinout_io[4], pinout_rscan[3], pinout_io[6], pinout_rscan[4], pinout_io[8]}; // pinout to display
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busvoodoo_oled_text_pinout((const char**)pinout, false); // set pinout on display
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busvoodoo_oled_update(); // update display to show text and pinout
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complete = true; // configuration is complete
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}
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break;
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default: // unknown case
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busvoodoo_rs232_setting = BUSVOODOO_RS232_SETTING_NONE; // restart settings next time
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break;
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complete = busvoodoo_uart_generic_setup(prefix, line); // configure underlying generic UART
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if (complete) { // generic configuration finished
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gpio_clear(GPIO(BUSVOODOO_RS232_EN_PORT), GPIO(BUSVOODOO_RS232_EN_PIN)); // set low to enable RS-232 transceiver receiver
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gpio_set_mode(GPIO(BUSVOODOO_RS232_EN_PORT), GPIO_MODE_OUTPUT_10_MHZ, GPIO_CNF_OUTPUT_PUSHPULL, GPIO(BUSVOODOO_RS232_EN_PIN)); // setup RS-232 enable GPIO as output to enable the receiver (pulled high to disable by default)
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gpio_set(GPIO(BUSVOODOO_RS232_SHDN_PORT), GPIO(BUSVOODOO_RS232_SHDN_PIN)); // set high to enable RS-232 transceiver transmitter
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gpio_set_mode(GPIO(BUSVOODOO_RS232_SHDN_PORT), GPIO_MODE_OUTPUT_10_MHZ, GPIO_CNF_OUTPUT_PUSHPULL, GPIO(BUSVOODOO_RS232_SHDN_PIN)); // setup RS-232 shutdwon GPIO as output to enable the transmitter (pulled low to disable by default)
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busvoodoo_led_blue_off(); // disable blue LED because there is no activity
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*prefix = "RS-232"; // display mode
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busvoodoo_oled_text_left(*prefix); // set mode title on OLED display
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const char* pinout_io[10] = {"GND", "5V", "3V3", "LV", NULL, NULL, NULL, NULL, NULL, NULL}; // RS-232 mode I/O pinout
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for (uint8_t i=0; i<LENGTH(pinout_io) && i<LENGTH(busvoodoo_global_pinout_io); i++) {
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busvoodoo_global_pinout_io[i] = pinout_io[i]; // set pin names
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}
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const char* pinout_rscan[5] = {"HV", "Rx", "Tx", "CTS", "RTS"}; // RS-232 mode RS/CAN pinout
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for (uint8_t i=0; i<LENGTH(pinout_rscan) && i<LENGTH(busvoodoo_global_pinout_rscan); i++) {
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busvoodoo_global_pinout_rscan[i] = pinout_rscan[i]; // set pin names
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}
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const char* pinout[10] = {pinout_rscan[0], pinout_io[0], pinout_rscan[1], pinout_io[2], pinout_rscan[2], pinout_io[4], pinout_rscan[3], pinout_io[6], pinout_rscan[4], pinout_io[8]}; // pinout to display
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busvoodoo_oled_text_pinout(pinout, false); // set pinout on display
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busvoodoo_oled_update(); // update display to show text and pinout
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}
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return complete;
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}
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@ -227,431 +107,17 @@ static bool busvoodoo_rs232_setup(char** prefix, const char* line)
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*/
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static void busvoodoo_rs232_exit(void)
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{
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usart_disable(USART(BUSVOODOO_RS232_USART)); // disable USART
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rcc_periph_clock_disable(RCC_USART(BUSVOODOO_RS232_USART)); // disable domain clock for USART peripheral
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gpio_set_mode(USART_TX_PORT(BUSVOODOO_RS232_USART), GPIO_MODE_INPUT, GPIO_CNF_INPUT_FLOAT, USART_TX_PIN(BUSVOODOO_RS232_USART)); // set pin back to floating input
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gpio_set_mode(USART_RX_PORT(BUSVOODOO_RS232_USART), GPIO_MODE_INPUT, GPIO_CNF_INPUT_FLOAT, USART_RX_PIN(BUSVOODOO_RS232_USART)); // set pin back to floating input
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gpio_set_mode(USART_RTS_PORT(BUSVOODOO_RS232_USART), GPIO_MODE_INPUT, GPIO_CNF_INPUT_FLOAT, USART_RTS_PIN(BUSVOODOO_RS232_USART)); // set pin back to floating input
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gpio_set_mode(USART_CTS_PORT(BUSVOODOO_RS232_USART), GPIO_MODE_INPUT, GPIO_CNF_INPUT_FLOAT, USART_CTS_PIN(BUSVOODOO_RS232_USART)); // set pin back to floating input
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busvoodoo_uart_generic_exit(); // exiting the underlying generic UART does everything we need
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gpio_set(GPIO(BUSVOODOO_RS232_EN_PORT), GPIO(BUSVOODOO_RS232_EN_PIN)); // set high to disable RS-232 transceiver receiver
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gpio_clear(GPIO(BUSVOODOO_RS232_SHDN_PORT), GPIO(BUSVOODOO_RS232_SHDN_PIN)); // set low to disable RS-232 transceiver transmitter
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}
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/** write to RS-232
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* @param[in] value value to write
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*/
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static void busvoodoo_rs232_write(uint16_t value)
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{
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while ((0==(USART_SR(USART(BUSVOODOO_RS232_USART)) & USART_SR_TXE) && !user_input_available)); // wait for transmit buffer to be empty (or user to interrupt)
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if (USART_SR(USART(BUSVOODOO_RS232_USART)) & USART_SR_TXE) { // we can send a character
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// remove unused bits
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if (USART_PARITY_NONE==busvoodoo_rs232_parity) { // no parity bit in frame
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if (8==busvoodoo_rs232_databits) { // 8-bit frame
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value &= 0xff;
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} else { // 9-bit frame
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value &= 0x1ff;
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}
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} else { // MSb is parity bit
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if (8==busvoodoo_rs232_databits) { // 8-bit frame
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value &= 0x7f;
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} else { // 9-bit frame
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value &= 0xff;
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}
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}
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// send data
|
||||
busvoodoo_led_blue_pulse(BUSVOODOO_LED_PULSE); // pulse blue LED to show transmission
|
||||
usart_send(USART(BUSVOODOO_RS232_USART), value); // transmit character
|
||||
// display data send
|
||||
printf("write: '%c'/0x", value);
|
||||
if ((USART_PARITY_NONE==busvoodoo_rs232_parity) && 9==busvoodoo_rs232_databits) { // case where the final data is 9 bits long
|
||||
printf("%03x\n", value);
|
||||
} else {
|
||||
printf("%02x\n", value);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/** read from RS-232
|
||||
*/
|
||||
static void busvoodoo_rs232_read(void)
|
||||
{
|
||||
printf("read: ");
|
||||
while (!(USART_SR(USART(BUSVOODOO_RS232_USART)) & USART_SR_RXNE) && !user_input_available); // wait for incoming data to be available (or user input to exit)
|
||||
if ((USART_SR(USART(BUSVOODOO_RS232_USART)) & USART_SR_RXNE)) { // verify if data has been received
|
||||
busvoodoo_led_blue_pulse(BUSVOODOO_LED_PULSE); // enable blue LED to show reception
|
||||
// get the errors
|
||||
bool error_noise = (0!=(USART_SR(USART(BUSVOODOO_RS232_USART)) & USART_SR_NE)); // read noise error flag
|
||||
bool error_framing = (0!=(USART_SR(USART(BUSVOODOO_RS232_USART)) & USART_SR_FE)); // read frame error flag
|
||||
bool error_parity = (0!=(USART_SR(USART(BUSVOODOO_RS232_USART)) & USART_SR_PE)); // read parity error flag
|
||||
uint16_t c = usart_recv(USART(BUSVOODOO_RS232_USART)); // read received character (also clears the error flags)
|
||||
// remove unused bits
|
||||
if (USART_PARITY_NONE==busvoodoo_rs232_parity) { // no parity bit in frame
|
||||
if (8==busvoodoo_rs232_databits) { // 8-bit frame
|
||||
c &= 0xff;
|
||||
} else { // 9-bit frame
|
||||
c &= 0x1ff;
|
||||
}
|
||||
} else { // MSb is parity bit
|
||||
if (8==busvoodoo_rs232_databits) { // 8-bit frame
|
||||
c &= 0x7f;
|
||||
} else { // 9-bit frame
|
||||
c &= 0xff;
|
||||
}
|
||||
}
|
||||
// display data
|
||||
printf("'%c'/0x", c);
|
||||
if ((USART_PARITY_NONE==busvoodoo_rs232_parity) && 9==busvoodoo_rs232_databits) { // case where the final data is 9 bits long
|
||||
printf("%03x ", c);
|
||||
} else {
|
||||
printf("%02x ", c);
|
||||
}
|
||||
// display errors
|
||||
printf("(");
|
||||
if (error_noise) {
|
||||
printf("noise");
|
||||
} else if (error_framing) {
|
||||
printf("framing");
|
||||
} else if (error_parity) {
|
||||
printf("parity");
|
||||
} else {
|
||||
printf("no");
|
||||
}
|
||||
printf(" error)");
|
||||
}
|
||||
printf("\n");
|
||||
}
|
||||
|
||||
/** perform RS-232 action
|
||||
* @param[in] action action to perform
|
||||
* @param[in] repetition how many times to perform the action
|
||||
* @param[in] perform the action (true) or just check it (false)
|
||||
* @return true if the action has been performed, false if it is malformed
|
||||
*/
|
||||
static bool busvoodoo_rs232_action(const char* action, uint32_t repetition, bool perform)
|
||||
{
|
||||
uint32_t length = strlen(action); // remember length since it will be used a number of times
|
||||
if (NULL==action || 0==length) { // there is nothing to do
|
||||
return true;
|
||||
}
|
||||
|
||||
if (1==length && 'r'==action[0]) { // read data
|
||||
if (!perform) {
|
||||
return true;
|
||||
}
|
||||
for (uint32_t i=0; i<repetition; i++) {
|
||||
busvoodoo_rs232_read(); // read from RS-232
|
||||
}
|
||||
} else if (1==length && 'u'==action[0]) { // sleep us
|
||||
if (!perform) {
|
||||
return true;
|
||||
}
|
||||
printf("wait for %u us\n", repetition);
|
||||
sleep_us(repetition); // sleep
|
||||
} else if (1==length && 'm'==action[0]) { // sleep ms
|
||||
if (!perform) {
|
||||
return true;
|
||||
}
|
||||
printf("wait for %u ms\n", repetition);
|
||||
sleep_ms(repetition); // sleep
|
||||
} else if ('0'==action[0]) { // send digit
|
||||
if (1==length) { // just send 0
|
||||
if (!perform) {
|
||||
return true;
|
||||
}
|
||||
for (uint32_t i=0; i<repetition; i++) {
|
||||
busvoodoo_rs232_write(0); // write to RS-232
|
||||
}
|
||||
} else if ('x'==action[1] || 'b'==action[1]) { // send hex/binary
|
||||
return busvoodoo_rs232_action(action+1, repetition, perform); // just retry without leading 0
|
||||
} else if (action[1]>='0' && action[1]<='9') { // send decimal
|
||||
return busvoodoo_rs232_action(action+1, repetition, perform); // just retry without leading 0
|
||||
} else { // malformed action
|
||||
return false;
|
||||
}
|
||||
} else if ('x'==action[0] && length>1) { // send hexadecimal value
|
||||
for (uint32_t i=1; i<length; i++) { // check string
|
||||
if (!((action[i]>='0' && action[i]<='9') || (action[i]>='a' && action[i]<='f') || (action[i]>='A' && action[i]<='F'))) { // check for hexadecimal character
|
||||
return false; // not an hexadecimal string
|
||||
}
|
||||
}
|
||||
if (!perform) {
|
||||
return true;
|
||||
}
|
||||
uint32_t value = strtol(&action[1], NULL, 16); // get hex value
|
||||
for (uint32_t i=0; i<repetition; i++) {
|
||||
busvoodoo_rs232_write(value); // write to SPI
|
||||
}
|
||||
} else if ('b'==action[0] && length>1) { // send binary value
|
||||
for (uint32_t i=1; i<length; i++) { // check string
|
||||
if (action[i]<'0' || action[i]>'1') { // check for binary character
|
||||
return false; // not a binary string
|
||||
}
|
||||
}
|
||||
if (!perform) {
|
||||
return true;
|
||||
}
|
||||
uint32_t value = strtol(&action[1], NULL, 2); // get binary value
|
||||
for (uint32_t i=0; i<repetition; i++) {
|
||||
busvoodoo_rs232_write(value); // write to SPI
|
||||
}
|
||||
} else if (action[0]>='1' && action[0]<='9') { // send decimal value
|
||||
for (uint32_t i=1; i<length; i++) { // check string
|
||||
if (action[i]<'0' || action[i]>'9') { // check for decimal character
|
||||
return false; // not a decimal string
|
||||
}
|
||||
}
|
||||
if (!perform) {
|
||||
return true;
|
||||
}
|
||||
uint32_t value = strtol(&action[0], NULL, 10); // get decimal value
|
||||
for (uint32_t i=0; i<repetition; i++) {
|
||||
busvoodoo_rs232_write(value); // write to SPI
|
||||
}
|
||||
} else if (length>=2 && ('"'==action[0] || '\''==action[0]) && (action[length-1]==action[0])) { // send ASCII character
|
||||
if (!perform) {
|
||||
return true;
|
||||
}
|
||||
for (uint32_t r=0; r<repetition; r++) {
|
||||
for (uint32_t i=1; i<length-1; i++) { // go through string
|
||||
busvoodoo_rs232_write(action[i]); // write to SPI
|
||||
}
|
||||
}
|
||||
} else { // malformed action
|
||||
return false;
|
||||
}
|
||||
return true; // all went well
|
||||
}
|
||||
|
||||
|
||||
// command handlers
|
||||
|
||||
/** command to perform actions
|
||||
* @param[in] argument actions to perform
|
||||
*/
|
||||
static void busvoodoo_rs232_command_actions(void* argument)
|
||||
{
|
||||
if (NULL==argument || 0==strlen(argument)) {
|
||||
printf("available actions (separated by space or ,):\n");
|
||||
printf("0\twrite decimal value\n");
|
||||
printf("0x0\twrite hexadecimal value\n");
|
||||
printf("0b0\twrite binary value\n");
|
||||
printf("\"a\"/'a'\twrite ASCII characters\n");
|
||||
printf("r\tread value\n");
|
||||
printf("u/m\twait 1 us/ms\n");
|
||||
printf(":n\trepeat action n times\n");
|
||||
return;
|
||||
}
|
||||
|
||||
// copy argument since it will be modified
|
||||
char* copy = calloc(strlen(argument)+1, sizeof(char));
|
||||
if (!copy) {
|
||||
while (true);
|
||||
}
|
||||
strncpy(copy, argument, strlen(argument)+1);
|
||||
// verify and perform actions
|
||||
if (!busvoodoo_global_actions(copy, false, &busvoodoo_rs232_action)) { // verify actions
|
||||
printf("malformed action(s)\n");
|
||||
} else { // action are ok
|
||||
printf("press any key to exit\n");
|
||||
busvoodoo_global_actions(argument, true, &busvoodoo_rs232_action); // perform action
|
||||
if (user_input_available) { // user interrupted flow
|
||||
user_input_get(); // discard user input
|
||||
}
|
||||
}
|
||||
free(copy); // release memory
|
||||
}
|
||||
|
||||
/** command to transmit a string
|
||||
* @param[in] argument string to transmit (CR+LF when none provided)
|
||||
*/
|
||||
static void busvoodoo_rs232_command_transmit(void* argument)
|
||||
{
|
||||
if (NULL==argument || 0==strlen(argument)) { // nothing to transmit
|
||||
argument = "\r\n"; // transmit CR+LF
|
||||
}
|
||||
printf("press any key to exit\n");
|
||||
for (uint16_t i=0; ((char*)(argument))[i] && !user_input_available; i++) {
|
||||
while ((0==(USART_SR(USART(BUSVOODOO_RS232_USART)) & USART_SR_TXE) && !user_input_available)); // wait for transmit buffer to be empty
|
||||
if (USART_SR(USART(BUSVOODOO_RS232_USART)) & USART_SR_TXE) { // we can send a character
|
||||
printf("%c", ((char*)(argument))[i]); // echo character to transmit
|
||||
busvoodoo_led_blue_pulse(BUSVOODOO_LED_PULSE); // pulse blue LED to show transmission
|
||||
usart_send(USART(BUSVOODOO_RS232_USART), ((char*)(argument))[i]); // transmit character
|
||||
}
|
||||
}
|
||||
if (user_input_available) { // user interrupted flow
|
||||
user_input_get(); // discard user input
|
||||
}
|
||||
if (strcmp(argument, "\r\n")) {
|
||||
printf("\n");
|
||||
}
|
||||
}
|
||||
|
||||
/** command to receive data
|
||||
* @param[in] argument in which format to display
|
||||
*/
|
||||
static void busvoodoo_rs232_command_receive(void* argument)
|
||||
{
|
||||
bool display_hex = false; // display in hex
|
||||
bool display_bin = false; // display in bin
|
||||
if (NULL!=argument && strlen(argument)>0) {
|
||||
if (0==strcmp(argument, "h") || 0==strcmp(argument, "hex")) { // user wants hexadecimal display
|
||||
display_hex = true; // remember to display in hexadecimal
|
||||
} else if (0==strcmp(argument, "b") || 0==strcmp(argument, "bin")) { // user wants binary display
|
||||
display_bin = true; // remember to display in binary
|
||||
} else {
|
||||
printf("malformed argument\n");
|
||||
return;
|
||||
}
|
||||
}
|
||||
printf("press any key to exit\n");
|
||||
while (!user_input_available) { // check for user input to exit
|
||||
if ((USART_SR(USART(BUSVOODOO_RS232_USART)) & USART_SR_RXNE)) { // verify if data has been received
|
||||
uint16_t c = usart_recv(USART(BUSVOODOO_RS232_USART)); // receive character
|
||||
busvoodoo_led_blue_pulse(BUSVOODOO_LED_PULSE); // enable blue LED to show reception
|
||||
// remove unused bits (ignore parity bit)
|
||||
if (USART_PARITY_NONE==busvoodoo_rs232_parity) { // no parity bit in frame
|
||||
if (8==busvoodoo_rs232_databits) { // 8-bit frame
|
||||
c &= 0xff;
|
||||
} else { // 9-bit frame
|
||||
c &= 0x1ff;
|
||||
}
|
||||
} else { // MSb is parity bit
|
||||
if (8==busvoodoo_rs232_databits) { // 8-bit frame
|
||||
c &= 0x7f;
|
||||
} else { // 9-bit frame
|
||||
c &= 0xff;
|
||||
}
|
||||
}
|
||||
if (display_hex) { // display data in hex
|
||||
if ((USART_PARITY_NONE==busvoodoo_rs232_parity) && 9==busvoodoo_rs232_databits) { // case where the final data is 9 bits long
|
||||
printf("%03x ", c);
|
||||
} else {
|
||||
printf("%02x ", c);
|
||||
}
|
||||
} else if (display_bin) { // display data in binary
|
||||
if (USART_PARITY_NONE==busvoodoo_rs232_parity) {
|
||||
if (8==busvoodoo_rs232_databits) { // 8-bit frame
|
||||
printf("%08b ", c);
|
||||
} else { // 9-bit frame
|
||||
printf("%09b ", c);
|
||||
}
|
||||
} else { // one bit is a parity bit
|
||||
if (8==busvoodoo_rs232_databits) { // 8-bit frame
|
||||
printf("%07b ", c);
|
||||
} else { // 9-bit frame
|
||||
printf("%08b ", c);
|
||||
}
|
||||
}
|
||||
} else { // display in ASCII
|
||||
printf("%c", c); // print received character
|
||||
}
|
||||
}
|
||||
}
|
||||
user_input_get(); // discard user input
|
||||
printf("\n"); // get to next line
|
||||
}
|
||||
|
||||
/** command to transmit and receive data
|
||||
* @param[in] argument no argument required
|
||||
*/
|
||||
static void busvoodoo_rs232_command_transceive(void* argument)
|
||||
{
|
||||
(void)argument; // we won't use the argument
|
||||
printf("press 5 times escape to exit\n");
|
||||
char last_c = 0; // last user character received
|
||||
uint8_t esc_count = 0; // number of times escape has press received
|
||||
while (true) { // check for escape sequence
|
||||
if (user_input_available) { // check if user wants to transmit something
|
||||
char c = user_input_get(); // get user input
|
||||
if (0x1b==c) { // user pressed escape
|
||||
if (0x1b!=last_c) { // this is the first escape press
|
||||
esc_count = 0;
|
||||
}
|
||||
esc_count++; // increment escape count
|
||||
}
|
||||
last_c = c; // remember key press
|
||||
if (esc_count<5) { // check for escape sequence
|
||||
while ((0==(USART_SR(USART(BUSVOODOO_RS232_USART)) & USART_SR_TXE) && !user_input_available)); // wait for transmit buffer to be empty
|
||||
if (USART_SR(USART(BUSVOODOO_RS232_USART)) & USART_SR_TXE) { // we can send a character
|
||||
usart_send_blocking(USART(BUSVOODOO_RS232_USART), c); // send user character
|
||||
busvoodoo_led_blue_pulse(BUSVOODOO_LED_PULSE); // enable blue LED to show transmission
|
||||
}
|
||||
} else { // user wants to exit
|
||||
break; // exit infinite loop
|
||||
}
|
||||
}
|
||||
if ((USART_SR(USART(BUSVOODOO_RS232_USART)) & USART_SR_RXNE)) { // verify if data has been received
|
||||
char c = usart_recv(USART(BUSVOODOO_RS232_USART)); // receive character
|
||||
busvoodoo_led_blue_pulse(BUSVOODOO_LED_PULSE); // enable blue LED to show reception
|
||||
printf("%c", c); // print received character
|
||||
}
|
||||
}
|
||||
printf("\n"); // get to next line
|
||||
}
|
||||
|
||||
/** command to verify incoming transmission for error
|
||||
* @param[in] argument argument not required
|
||||
*/
|
||||
static void busvoodoo_rs232_command_error(void* argument)
|
||||
{
|
||||
(void)argument; // argument not used
|
||||
printf("press any key to exit\n");
|
||||
while (!user_input_available) { // wait until user interrupt
|
||||
busvoodoo_rs232_read(); // read incoming data (this also checks for errors
|
||||
}
|
||||
user_input_get(); // discard user input
|
||||
}
|
||||
|
||||
/** RS-232 menu commands */
|
||||
static const struct menu_command_t busvoodoo_rs232_commands[] = {
|
||||
{
|
||||
.shortcut = 'a',
|
||||
.name = "action",
|
||||
.command_description = "perform protocol actions",
|
||||
.argument = MENU_ARGUMENT_STRING,
|
||||
.argument_description = "[actions]",
|
||||
.command_handler = &busvoodoo_rs232_command_actions,
|
||||
},
|
||||
{
|
||||
.shortcut = 'r',
|
||||
.name = "receive",
|
||||
.command_description = "show incoming data [in hexadecimal or binary]",
|
||||
.argument = MENU_ARGUMENT_STRING,
|
||||
.argument_description = "[hex|bin]",
|
||||
.command_handler = &busvoodoo_rs232_command_receive,
|
||||
},
|
||||
{
|
||||
.shortcut = 't',
|
||||
.name = "transmit",
|
||||
.command_description = "transmit ASCII text (empty for CR+LF)",
|
||||
.argument = MENU_ARGUMENT_STRING,
|
||||
.argument_description = "[text]",
|
||||
.command_handler = &busvoodoo_rs232_command_transmit,
|
||||
},
|
||||
{
|
||||
.shortcut = 'x',
|
||||
.name = "transceive",
|
||||
.command_description = "transmit and receive data",
|
||||
.argument = MENU_ARGUMENT_NONE,
|
||||
.argument_description = NULL,
|
||||
.command_handler = &busvoodoo_rs232_command_transceive,
|
||||
},
|
||||
{
|
||||
.shortcut = 'e',
|
||||
.name = "error",
|
||||
.command_description = "verify incoming transmission for errors",
|
||||
.argument = MENU_ARGUMENT_NONE,
|
||||
.argument_description = NULL,
|
||||
.command_handler = &busvoodoo_rs232_command_error,
|
||||
},
|
||||
};
|
||||
|
||||
const struct busvoodoo_mode_t busvoodoo_rs232_mode = {
|
||||
.name = "rs232",
|
||||
.description = "Recommended Standard 232",
|
||||
.full_only = true,
|
||||
.setup = &busvoodoo_rs232_setup,
|
||||
.commands = busvoodoo_rs232_commands,
|
||||
.commands_nb = LENGTH(busvoodoo_rs232_commands),
|
||||
.commands = busvoodoo_uart_generic_commands,
|
||||
.commands_nb = busvoodoo_uart_generic_commands_nb,
|
||||
.exit = &busvoodoo_rs232_exit,
|
||||
};
|
||||
|
|
|
|||
Loading…
Reference in New Issue