basic usart skeleton

sipo
Ondřej Hruška 7 years ago
parent 9c5d889cfc
commit e88bf84ea1
Signed by: MightyPork
GPG Key ID: 2C5FD5035250423D
  1. 1
      gex.mk
  2. 4
      platform/platform.c
  3. 1
      units/i2c/unit_i2c.c
  4. 1
      units/spi/unit_spi.c
  5. 419
      units/usart/unit_uart.c
  6. 12
      units/usart/unit_uart.h
  7. 7
      utils/ini_writer.c
  8. 5
      utils/ini_writer.h
  9. 15
      utils/str_utils.h

@ -10,6 +10,7 @@ GEX_SRC_DIR = \
User/units/test \ User/units/test \
User/units/digital_out \ User/units/digital_out \
User/units/digital_in \ User/units/digital_in \
User/units/usart \
User/units/i2c \ User/units/i2c \
User/units/spi \ User/units/spi \
User/TinyFrame \ User/TinyFrame \

@ -7,12 +7,13 @@
#include "USB/usb_device.h" #include "USB/usb_device.h"
#include "framework/resources.h" #include "framework/resources.h"
#include "framework/unit_registry.h" #include "framework/unit_registry.h"
#include "units/digital_out/unit_dout.h" #include "units/digital_out/unit_dout.h"
#include "units/digital_in/unit_din.h" #include "units/digital_in/unit_din.h"
#include "units/neopixel/unit_neopixel.h" #include "units/neopixel/unit_neopixel.h"
#include "units/i2c/unit_i2c.h" #include "units/i2c/unit_i2c.h"
#include "units/test/unit_test.h" #include "units/test/unit_test.h"
#include "units/usart/unit_uart.h"
#include "units/spi/unit_spi.h" #include "units/spi/unit_spi.h"
void plat_init_resources(void) void plat_init_resources(void)
@ -79,6 +80,7 @@ void plat_init_resources(void)
ureg_add_type(&UNIT_NEOPIXEL); ureg_add_type(&UNIT_NEOPIXEL);
ureg_add_type(&UNIT_I2C); ureg_add_type(&UNIT_I2C);
ureg_add_type(&UNIT_SPI); ureg_add_type(&UNIT_SPI);
ureg_add_type(&UNIT_USART);
// Free all present resources // Free all present resources
{ {

@ -2,7 +2,6 @@
// Created by MightyPork on 2018/01/02. // Created by MightyPork on 2018/01/02.
// //
#include <framework/system_settings.h>
#include "comm/messages.h" #include "comm/messages.h"
#include "unit_base.h" #include "unit_base.h"
#include "utils/avrlibc.h" #include "utils/avrlibc.h"

@ -2,7 +2,6 @@
// Created by MightyPork on 2018/01/02. // Created by MightyPork on 2018/01/02.
// //
#include <framework/system_settings.h>
#include <stm32f072xb.h> #include <stm32f072xb.h>
#include "comm/messages.h" #include "comm/messages.h"
#include "unit_base.h" #include "unit_base.h"

@ -0,0 +1,419 @@
//
// Created by MightyPork on 2018/01/02.
//
#include "platform.h"
#include "comm/messages.h"
#include "unit_base.h"
#include "utils/avrlibc.h"
#include "unit_uart.h"
// SPI master
/** Private data structure */
struct priv {
uint8_t periph_num; //!< 1-6
uint8_t remap; //!< UART remap option
uint32_t baudrate; //!< UART baud rate
uint8_t parity; //!< 0-none, 1-odd, 2-even
uint8_t stopbits; //!< 1-one, 2-2, 3-1.5
bool enable_rx; //!< Configure and enable the Rx line
bool enable_tx; //!< Configure and enable the Tx line
uint8_t hw_flow_control; //!< HW flow control 0-none, 1-RTX, 2-CTS, 3-both
bool clock_output; //!< Output serial clock
bool cpol; //!< clock CPOL setting
bool cpha; //!< clock CPHA setting
uint32_t rx_buf_size; //!< Receive buffer size
uint32_t rx_full_thr; //!< Receive buffer full threshold (will be sent to PC)
uint16_t rx_timeout; //!< Receive timeout (time of inactivity before flushing to PC)
USART_TypeDef *periph;
};
/** Allocate data structure and set defaults */
static error_t UUSART_preInit(Unit *unit)
{
bool suc = true;
struct priv *priv = unit->data = calloc_ck(1, sizeof(struct priv), &suc);
if (!suc) return E_OUT_OF_MEM;
// some defaults
priv->periph_num = 1;
priv->remap = 0;
priv->baudrate = 115200;
priv->parity = 0; //!< 0-none, 1-odd, 2-even
priv->stopbits = 1; //!< 1-one, 2-2, 3-1.5
priv->enable_rx = true;
priv->enable_tx = true;
priv->hw_flow_control = false;
priv->clock_output = false;
priv->cpol = 0;
priv->cpha = 0;
priv->rx_buf_size = 128;
priv->rx_full_thr = 90;
priv->rx_timeout = 3; // ms
return E_SUCCESS;
}
// ------------------------------------------------------------------------
/** Load from a binary buffer stored in Flash */
static void UUSART_loadBinary(Unit *unit, PayloadParser *pp)
{
struct priv *priv = unit->data;
uint8_t version = pp_u8(pp);
(void)version;
priv->periph_num = pp_u8(pp);
priv->remap = pp_u8(pp);
priv->baudrate = pp_u32(pp);
priv->parity = pp_u8(pp);
priv->stopbits = pp_u8(pp);
priv->enable_rx = pp_bool(pp);
priv->enable_tx = pp_bool(pp);
priv->hw_flow_control = pp_u8(pp);
priv->clock_output = pp_bool(pp);
priv->cpol = pp_bool(pp);
priv->cpha = pp_bool(pp);
priv->rx_buf_size = pp_u32(pp);
priv->rx_full_thr = pp_u32(pp);
priv->rx_timeout = pp_u16(pp);
}
/** Write to a binary buffer for storing in Flash */
static void UUSART_writeBinary(Unit *unit, PayloadBuilder *pb)
{
struct priv *priv = unit->data;
pb_u8(pb, 0); // version
pb_u8(pb, priv->periph_num);
pb_u8(pb, priv->remap);
pb_u32(pb, priv->baudrate);
pb_u8(pb, priv->parity);
pb_u8(pb, priv->stopbits);
pb_bool(pb, priv->enable_rx);
pb_bool(pb, priv->enable_tx);
pb_u8(pb, priv->hw_flow_control);
pb_bool(pb, priv->clock_output);
pb_bool(pb, priv->cpol);
pb_bool(pb, priv->cpha);
pb_u32(pb, priv->rx_buf_size);
pb_u32(pb, priv->rx_full_thr);
pb_u16(pb, priv->rx_timeout);
}
// ------------------------------------------------------------------------
/** Parse a key-value pair from the INI file */
static error_t UUSART_loadIni(Unit *unit, const char *key, const char *value)
{
bool suc = true;
struct priv *priv = unit->data;
if (streq(key, "device")) {
priv->periph_num = (uint8_t) avr_atoi(value);
}
else if (streq(key, "remap")) {
priv->remap = (uint8_t) avr_atoi(value);
}
else if (streq(key, "baud-rate")) {
priv->baudrate = (uint32_t ) avr_atoi(value);
}
else if (streq(key, "parity")) {
priv->parity = (uint8_t) avr_atoi(value);
}
else if (streq(key, "stop-bits")) {
priv->stopbits = (uint8_t) (1 + str_parse_012(value, "1", "2", "1.5", &suc));
}
else if (streq(key, "enable-rx")) {
priv->enable_rx = str_parse_yn(value, &suc);
}
else if (streq(key, "enable-tx")) {
priv->enable_tx = str_parse_yn(value, &suc);
}
else if (streq(key, "hw-flow-control")) {
priv->hw_flow_control = (uint8_t) avr_atoi(value);
}
else if (streq(key, "synchronous")) {
priv->clock_output = (bool) avr_atoi(value);
}
else if (streq(key, "cpol")) {
priv->cpol = (bool) avr_atoi(value);
}
else if (streq(key, "cpha")) {
priv->cpha = (bool) avr_atoi(value);
}
else if (streq(key, "rx-buffer")) {
priv->rx_buf_size = (uint32_t ) avr_atoi(value);
}
else if (streq(key, "rx-full-theshold")) {
priv->rx_full_thr = (uint32_t ) avr_atoi(value);
}
else if (streq(key, "rx-timeout")) {
priv->rx_timeout = (uint16_t ) avr_atoi(value);
}
else {
return E_BAD_KEY;
}
if (!suc) return E_BAD_VALUE;
return E_SUCCESS;
}
/** Generate INI file section for the unit */
static void UUSART_writeIni(Unit *unit, IniWriter *iw)
{
struct priv *priv = unit->data;
iw_comment(iw, "Peripheral number (UARTx)");
iw_entry(iw, "device", "%d", (int)priv->periph_num);
iw_comment(iw, "Pin mappings (SCK,MISO,MOSI)");
#if GEX_PLAT_F072_DISCOVERY
// TODO
// iw_comment(iw, " SPI1: (0) A5,A6,A7 (1) B3,B4,B5 (2) E13,E14,E15");
// iw_comment(iw, " SPI2: (0) B13,B14,B15 (1) D1,D3,D4");
#elif GEX_PLAT_F103_BLUEPILL
#error "NO IMPL"
#elif GEX_PLAT_F303_DISCOVERY
#error "NO IMPL"
#elif GEX_PLAT_F407_DISCOVERY
#error "NO IMPL"
#else
#error "BAD PLATFORM!"
#endif
iw_entry(iw, "remap", "%d", (int)priv->remap);
iw_cmt_newline(iw);
iw_comment(iw, "Baud rate"); // TODO examples/range
iw_entry(iw, "baud-rate", "%d", (int)priv->baudrate);
iw_comment(iw, "Parity (0-none, 1-odd, 2-even)");
iw_entry(iw, "parity", "%d", (int)priv->parity);
iw_comment(iw, "Stop-bits (1, 1.5, 2)");
iw_entry(iw, "stop-bits", "%s", (priv->stopbits==3)?"1.5":(priv->stopbits==2?"2":"1"));
iw_comment(iw, "Enable the RX / TX lines");
iw_entry(iw, "exable-rx", str_yn(priv->enable_rx));
iw_entry(iw, "exable-tx", str_yn(priv->enable_tx));
iw_comment(iw, "Hardware flow control (NONE, RTS, CTS, ALL)");
iw_entry(iw, "hw-flow-control", "%s", str_4(priv->hw_flow_control, 0, "NONE", 1, "RTS", 2, "CTS", 3, "ALL"));
iw_comment(iw, "Clock output (Y,N) - N for async");
iw_entry(iw, "clock-output", str_yn(priv->clock_output));
iw_comment(iw, "Sync: Clock polarity: 0,1 (clock idle level)");
iw_entry(iw, "cpol", "%d", (int)priv->cpol);
iw_comment(iw, "Sync: Clock phase: 0,1 (active edge, 0-first, 1-second)");
iw_entry(iw, "cpha", "%d", (int)priv->cpha);
iw_comment(iw, "Receive buffer capacity, full threshold and flush timeout");
iw_entry(iw, "rx-buffer", "%d", (int)priv->rx_buf_size);
iw_entry(iw, "rx-full-theshold", "%d", (int)priv->rx_full_thr);
iw_entry(iw, "rx-timeout", "%d", (int)priv->rx_timeout);
}
// ------------------------------------------------------------------------
/** Finalize unit set-up */
static error_t UUSART_init(Unit *unit)
{
bool suc = true;
struct priv *priv = unit->data;
if (!(priv->periph_num >= 1 && priv->periph_num <= 4)) {
dbg("!! Bad UART periph");
// TODO count based on platform chip
return E_BAD_CONFIG;
}
// assign and claim the peripheral
if (priv->periph_num == 1) {
TRY(rsc_claim(unit, R_USART1));
priv->periph = USART1;
}
else if (priv->periph_num == 2) {
TRY(rsc_claim(unit, R_USART2));
priv->periph = USART2;
}
else if (priv->periph_num == 3) {
TRY(rsc_claim(unit, R_USART3));
priv->periph = USART3;
}
else if (priv->periph_num == 4) {
TRY(rsc_claim(unit, R_USART4));
priv->periph = USART4;
}
// This is written for F072, other platforms will need adjustments
// Configure UART pins (AF)
char uart_portname;
uint8_t pin_rx;
uint8_t pin_tx;
uint8_t pin_clk;
uint8_t pin_rts;
uint8_t pin_cts;
uint32_t af_uart;
// TODO
#if GEX_PLAT_F072_DISCOVERY
// SPI1 - many options
// sck, miso, mosi, af
if (priv->periph_num == 1) {
// SPI1
if (priv->remap == 0) {
uart_portname = 'A';
// af_spi = LL_GPIO_AF_0;
// pin_sck = 5;
// pin_miso = 6;
// pin_mosi = 7;
}
else {
return E_BAD_CONFIG;
}
}
// TODO other periphs
#elif GEX_PLAT_F103_BLUEPILL
#error "NO IMPL"
#elif GEX_PLAT_F303_DISCOVERY
#error "NO IMPL"
#elif GEX_PLAT_F407_DISCOVERY
#error "NO IMPL"
#else
#error "BAD PLATFORM!"
#endif
//
// // first, we have to claim the pins
// TRY(rsc_claim_pin(unit, uart_portname, pin_mosi));
// TRY(rsc_claim_pin(unit, uart_portname, pin_miso));
// TRY(rsc_claim_pin(unit, uart_portname, pin_sck));
//
// configure_gpio_alternate(uart_portname, pin_mosi, af_spi);
// configure_gpio_alternate(uart_portname, pin_miso, af_spi);
// configure_gpio_alternate(uart_portname, pin_sck, af_spi);
//
// if (priv->periph_num == 1) {
// __HAL_RCC_SPI1_CLK_ENABLE();
// } else {
// __HAL_RCC_SPI2_CLK_ENABLE();
// }
//
// // configure SSN GPIOs
// {
// // Claim all needed pins
// TRY(rsc_claim_gpios(unit, priv->ssn_port_name, priv->ssn_pins));
// TRY(configure_sparse_pins(priv->ssn_port_name, priv->ssn_pins, &priv->ssn_port,
// LL_GPIO_MODE_OUTPUT, LL_GPIO_OUTPUT_PUSHPULL));
// // Set the initial state - all high
// priv->ssn_port->BSRR = priv->ssn_pins;
// }
//
// // Configure SPI - must be configured under reset
// LL_SPI_Disable(priv->periph);
// {
// uint32_t presc = priv->prescaller;
// uint32_t lz = __CLZ(presc);
// if (lz < 23) lz = 23;
// if (lz > 30) lz = 30;
// presc = (32 - lz - 2);
// LL_SPI_SetBaudRatePrescaler(priv->periph, (presc<<SPI_CR1_BR_Pos)&SPI_CR1_BR_Msk);
//
// LL_SPI_SetClockPolarity(priv->periph, priv->cpol ? LL_SPI_POLARITY_HIGH : LL_SPI_POLARITY_LOW);
// LL_SPI_SetClockPhase(priv->periph, priv->cpha ? LL_SPI_PHASE_1EDGE : LL_SPI_PHASE_2EDGE);
// LL_SPI_SetTransferDirection(priv->periph, priv->tx_only ? LL_SPI_HALF_DUPLEX_TX : LL_SPI_FULL_DUPLEX);
// LL_SPI_SetTransferBitOrder(priv->periph, priv->lsb_first ? LL_SPI_LSB_FIRST : LL_SPI_MSB_FIRST);
//
// LL_SPI_SetNSSMode(priv->periph, LL_SPI_NSS_SOFT);
// LL_SPI_SetDataWidth(priv->periph, LL_SPI_DATAWIDTH_8BIT);
// LL_SPI_SetRxFIFOThreshold(priv->periph, LL_SPI_RX_FIFO_TH_QUARTER); // trigger RXNE on 1 byte
//
// LL_SPI_SetMode(priv->periph, LL_SPI_MODE_MASTER);
// }
// LL_SPI_Enable(priv->periph);
return E_SUCCESS;
}
/** Tear down the unit */
static void UUSART_deInit(Unit *unit)
{
struct priv *priv = unit->data;
// // de-init the pins & peripheral only if inited correctly
// if (unit->status == E_SUCCESS) {
// assert_param(priv->periph);
//
// LL_SPI_DeInit(priv->periph);
//
// if (priv->periph_num == 1) {
// __HAL_RCC_SPI1_CLK_DISABLE();
// } else {
// __HAL_RCC_SPI2_CLK_DISABLE();
// }
// }
// Release all resources
rsc_teardown(unit);
// Free memory
free(unit->data);
unit->data = NULL;
}
// ------------------------------------------------------------------------
enum PinCmd_ {
CMD_WRITE = 0,
};
/** Handle a request message */
static error_t UUSART_handleRequest(Unit *unit, TF_ID frame_id, uint8_t command, PayloadParser *pp)
{
switch (command) {
case CMD_WRITE:
return E_NOT_IMPLEMENTED;
default:
return E_UNKNOWN_COMMAND;
}
}
// ------------------------------------------------------------------------
/** Unit template */
const UnitDriver UNIT_USART = {
.name = "USART",
.description = "Serial port",
// Settings
.preInit = UUSART_preInit,
.cfgLoadBinary = UUSART_loadBinary,
.cfgWriteBinary = UUSART_writeBinary,
.cfgLoadIni = UUSART_loadIni,
.cfgWriteIni = UUSART_writeIni,
// Init
.init = UUSART_init,
.deInit = UUSART_deInit,
// Function
.handleRequest = UUSART_handleRequest,
};

@ -0,0 +1,12 @@
//
// Created by MightyPork on 2018/01/02.
//
#ifndef GEX_F072_UNIT_USART_H
#define GEX_F072_UNIT_USART_H
#include "unit.h"
extern const UnitDriver UNIT_USART;
#endif //GEX_F072_UNIT_USART_H

@ -98,3 +98,10 @@ uint32_t iw_measure_total(void (*handler)(IniWriter *))
handler(&iw); handler(&iw);
return 0xFFFFFFFF - iw.skip; return 0xFFFFFFFF - iw.skip;
} }
void iw_cmt_newline(IniWriter *iw)
{
if (SystemSettings.ini_comments) iw_newline(iw);
}

@ -45,10 +45,9 @@ static inline void iw_string(IniWriter *iw, const char *str)
} }
} }
void iw_cmt_newline(IniWriter *iw);
#define iw_newline(iw) iw_string(iw, "\r\n") #define iw_newline(iw) iw_string(iw, "\r\n")
#define iw_cmt_newline(iw) do { \
if (SystemSettings.ini_comments) iw_string(iw, "\r\n"); \
} while (0)
/** /**
* Try to snprintf to the file * Try to snprintf to the file

@ -110,6 +110,21 @@ uint8_t str_parse_012(const char *str, const char *a, const char *b, const char
/** Convert bool to one of two options */ /** Convert bool to one of two options */
#define str_01(cond, a, b) ((cond) ? (b) : (a)) #define str_01(cond, a, b) ((cond) ? (b) : (a))
/** Convert number to one of three options */
#define str_3(cond, na, a, nb, b, nc, c) (\
((cond)==(na)) ? (a) : \
((cond)==(nb)) ? (b) : \
(c) \
)
/** Convert number to one of three options */
#define str_4(cond, na, a, nb, b, nc, c, nd, d) (\
((cond)==(na)) ? (a) : \
((cond)==(nb)) ? (b) : \
((cond)==(nc)) ? (c) : \
(d) \
)
/** Convert bool to Y or N */ /** Convert bool to Y or N */
#define str_yn(cond) ((cond) ? ("Y") : ("N")) #define str_yn(cond) ((cond) ? ("Y") : ("N"))

Loading…
Cancel
Save