Johannes Stratmann
added prescaler for 16 bit pwm in LPC1347 target
Fork of
mbed-dev
by 
mbed official
Diff: targets/hal/TARGET_RENESAS/TARGET_RZ_A1H/serial_api.c
- Revision:
- 144:ef7eb2e8f9f7
- Parent:
- 141:a2b798ec44f6
--- a/targets/hal/TARGET_RENESAS/TARGET_RZ_A1H/serial_api.c Tue Aug 02 14:07:36 2016 +0000
+++ b/targets/hal/TARGET_RENESAS/TARGET_RZ_A1H/serial_api.c Fri Sep 02 15:07:44 2016 +0100
@@ -1,941 +1,941 @@
-/* mbed Microcontroller Library
- * Copyright (c) 2006-2015 ARM Limited
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-// math.h required for floating point operations for baud rate calculation
-#include "mbed_assert.h"
-#include <math.h>
-#include <string.h>
-#include <stdlib.h>
-
-#include "serial_api.h"
-#include "cmsis.h"
-#include "pinmap.h"
-#include "gpio_api.h"
-
-#include "scif_iodefine.h"
-#include "cpg_iodefine.h"
-
-/******************************************************************************
- * INITIALIZATION
- ******************************************************************************/
-#define PCLK (66666666) // Define the peripheral clock P1 frequency.
-
-#define UART_NUM 8
-#define IRQ_NUM 4
-
-static void uart0_tx_irq(void);
-static void uart1_tx_irq(void);
-static void uart2_tx_irq(void);
-static void uart3_tx_irq(void);
-static void uart4_tx_irq(void);
-static void uart5_tx_irq(void);
-static void uart6_tx_irq(void);
-static void uart7_tx_irq(void);
-static void uart0_rx_irq(void);
-static void uart1_rx_irq(void);
-static void uart2_rx_irq(void);
-static void uart3_rx_irq(void);
-static void uart4_rx_irq(void);
-static void uart5_rx_irq(void);
-static void uart6_rx_irq(void);
-static void uart7_rx_irq(void);
-static void uart0_er_irq(void);
-static void uart1_er_irq(void);
-static void uart2_er_irq(void);
-static void uart3_er_irq(void);
-static void uart4_er_irq(void);
-static void uart5_er_irq(void);
-static void uart6_er_irq(void);
-static void uart7_er_irq(void);
-
-static void serial_put_done(serial_t *obj);
-static uint8_t serial_available_buffer(serial_t *obj);
-static void serial_irq_err_set(serial_t *obj, uint32_t enable);
-
-static const PinMap PinMap_UART_TX[] = {
- {P2_14 , UART0, 6},
- {P2_5 , UART1, 6},
- {P4_12 , UART1, 7},
- {P6_3 , UART2, 7},
- {P4_14 , UART2, 7},
- {P5_3 , UART3, 5},
- {P8_8 , UART3, 7},
- {P5_0 , UART4, 5},
- {P8_14 , UART4, 7},
- {P8_13 , UART5, 5},
- {P11_10, UART5, 3},
- {P6_6 , UART5, 5},
- {P5_6 , UART6, 5},
- {P11_1 , UART6, 4},
- {P7_4 , UART7, 4},
- {NC , NC , 0}
-};
-
-static const PinMap PinMap_UART_RX[] = {
- {P2_15 , UART0, 6},
- {P2_6 , UART1, 6},
- {P4_13 , UART1, 7},
- {P6_2 , UART2, 7},
- {P4_15 , UART2, 7},
- {P5_4 , UART3, 5},
- {P8_9 , UART3, 7},
- {P5_1 , UART4, 5},
- {P8_15 , UART4, 7},
- {P8_11 , UART5, 5},
- {P11_11, UART5, 3},
- {P6_7 , UART5, 5},
- {P5_7 , UART6, 5},
- {P11_2 , UART6, 4},
- {P7_5 , UART7, 4},
- {NC , NC , 0}
-};
-
-static const PinMap PinMap_UART_CTS[] = {
- {P2_3 , UART1, 6},
- {P11_7 , UART5, 3},
- {P7_6 , UART7, 4},
- {NC , NC , 0}
-};
-static const PinMap PinMap_UART_RTS[] = {
- {P2_7 , UART1, 6},
- {P11_8 , UART5, 3},
- {P7_7 , UART7, 4},
- {NC , NC , 0}
-};
-
-
-
-static const struct st_scif *SCIF[] = SCIF_ADDRESS_LIST;
-static uart_irq_handler irq_handler;
-
-int stdio_uart_inited = 0;
-serial_t stdio_uart;
-
-struct serial_global_data_s {
- uint32_t serial_irq_id;
- gpio_t sw_rts, sw_cts;
- uint8_t rx_irq_set_flow, rx_irq_set_api;
- serial_t *tranferring_obj, *receiving_obj;
- uint32_t async_tx_callback, async_rx_callback;
- int event, wanted_rx_events;
-};
-
-static struct serial_global_data_s uart_data[UART_NUM];
-
-static const IRQn_Type irq_set_tbl[UART_NUM][IRQ_NUM] = {
- {SCIFRXI0_IRQn, SCIFTXI0_IRQn, SCIFBRI0_IRQn, SCIFERI0_IRQn},
- {SCIFRXI1_IRQn, SCIFTXI1_IRQn, SCIFBRI1_IRQn, SCIFERI1_IRQn},
- {SCIFRXI2_IRQn, SCIFTXI2_IRQn, SCIFBRI2_IRQn, SCIFERI2_IRQn},
- {SCIFRXI3_IRQn, SCIFTXI3_IRQn, SCIFBRI3_IRQn, SCIFERI3_IRQn},
- {SCIFRXI4_IRQn, SCIFTXI4_IRQn, SCIFBRI4_IRQn, SCIFERI4_IRQn},
- {SCIFRXI5_IRQn, SCIFTXI5_IRQn, SCIFBRI5_IRQn, SCIFERI5_IRQn},
- {SCIFRXI6_IRQn, SCIFTXI6_IRQn, SCIFBRI6_IRQn, SCIFERI6_IRQn},
- {SCIFRXI7_IRQn, SCIFTXI7_IRQn, SCIFBRI7_IRQn, SCIFERI7_IRQn}
-};
-
-static const IRQHandler hander_set_tbl[UART_NUM][IRQ_NUM] = {
- {uart0_rx_irq, uart0_tx_irq, uart0_er_irq, uart0_er_irq},
- {uart1_rx_irq, uart1_tx_irq, uart1_er_irq, uart1_er_irq},
- {uart2_rx_irq, uart2_tx_irq, uart2_er_irq, uart2_er_irq},
- {uart3_rx_irq, uart3_tx_irq, uart3_er_irq, uart3_er_irq},
- {uart4_rx_irq, uart4_tx_irq, uart4_er_irq, uart4_er_irq},
- {uart5_rx_irq, uart5_tx_irq, uart5_er_irq, uart5_er_irq},
- {uart6_rx_irq, uart6_tx_irq, uart6_er_irq, uart6_er_irq},
- {uart7_rx_irq, uart7_tx_irq, uart7_er_irq, uart7_er_irq}
-};
-
-static __IO uint16_t *SCSCR_MATCH[] = {
- &SCSCR_0,
- &SCSCR_1,
- &SCSCR_2,
- &SCSCR_3,
- &SCSCR_4,
- &SCSCR_5,
- &SCSCR_6,
- &SCSCR_7,
-};
-
-static __IO uint16_t *SCFSR_MATCH[] = {
- &SCFSR_0,
- &SCFSR_1,
- &SCFSR_2,
- &SCFSR_3,
- &SCFSR_4,
- &SCFSR_5,
- &SCFSR_6,
- &SCFSR_7,
-};
-
-
-void serial_init(serial_t *obj, PinName tx, PinName rx) {
- volatile uint8_t dummy ;
- int is_stdio_uart = 0;
- // determine the UART to use
- uint32_t uart_tx = pinmap_peripheral(tx, PinMap_UART_TX);
- uint32_t uart_rx = pinmap_peripheral(rx, PinMap_UART_RX);
- uint32_t uart = pinmap_merge(uart_tx, uart_rx);
-
- MBED_ASSERT((int)uart != NC);
-
- obj->serial.uart = (struct st_scif *)SCIF[uart];
- // enable power
- switch (uart) {
- case UART0:
- CPG.STBCR4 &= ~(1 << 7);
- break;
- case UART1:
- CPG.STBCR4 &= ~(1 << 6);
- break;
- case UART2:
- CPG.STBCR4 &= ~(1 << 5);
- break;
- case UART3:
- CPG.STBCR4 &= ~(1 << 4);
- break;
- case UART4:
- CPG.STBCR4 &= ~(1 << 3);
- break;
- case UART5:
- CPG.STBCR4 &= ~(1 << 2);
- break;
- case UART6:
- CPG.STBCR4 &= ~(1 << 1);
- break;
- case UART7:
- CPG.STBCR4 &= ~(1 << 0);
- break;
- }
- dummy = CPG.STBCR4;
-
- /* ==== SCIF initial setting ==== */
- /* ---- Serial control register (SCSCR) setting ---- */
- /* B'00 : Internal CLK */
- obj->serial.uart->SCSCR = 0x0000u; /* SCIF transmitting and receiving operations stop */
-
- /* ---- FIFO control register (SCFCR) setting ---- */
- /* Transmit FIFO reset & Receive FIFO data register reset */
- obj->serial.uart->SCFCR = 0x0006;
-
- /* ---- Serial status register (SCFSR) setting ---- */
- dummy = obj->serial.uart->SCFSR;
- obj->serial.uart->SCFSR = (dummy & 0xFF6Cu); /* ER,BRK,DR bit clear */
-
- /* ---- Line status register (SCLSR) setting ---- */
- /* ORER bit clear */
- obj->serial.uart->SCLSR = 0;
-
- /* ---- Serial extension mode register (SCEMR) setting ----
- b7 BGDM - Baud rate generator double-speed mode : Normal mode
- b0 ABCS - Base clock select in asynchronous mode : Base clock is 16 times the bit rate */
- obj->serial.uart->SCEMR = 0x0000u;
-
- /* ---- Bit rate register (SCBRR) setting ---- */
- serial_baud (obj, 9600);
- serial_format(obj, 8, ParityNone, 1);
-
- /* ---- FIFO control register (SCFCR) setting ---- */
- obj->serial.uart->SCFCR = 0x0030u;
-
- /* ---- Serial port register (SCSPTR) setting ----
- b1 SPB2IO - Serial port break output : disabled
- b0 SPB2DT - Serial port break data : High-level */
- obj->serial.uart->SCSPTR = 0x0003u; // SPB2IO = 1, SPB2DT = 1
-
- /* ---- Line status register (SCLSR) setting ----
- b0 ORER - Overrun error detect : clear */
-
- if (obj->serial.uart->SCLSR & 0x0001) {
- obj->serial.uart->SCLSR = 0u; // ORER clear
- }
-
- // pinout the chosen uart
- pinmap_pinout(tx, PinMap_UART_TX);
- pinmap_pinout(rx, PinMap_UART_RX);
-
- switch (uart) {
- case UART0:
- obj->serial.index = 0;
- break;
- case UART1:
- obj->serial.index = 1;
- break;
- case UART2:
- obj->serial.index = 2;
- break;
- case UART3:
- obj->serial.index = 3;
- break;
- case UART4:
- obj->serial.index = 4;
- break;
- case UART5:
- obj->serial.index = 5;
- break;
- case UART6:
- obj->serial.index = 6;
- break;
- case UART7:
- obj->serial.index = 7;
- break;
- }
- uart_data[obj->serial.index].sw_rts.pin = NC;
- uart_data[obj->serial.index].sw_cts.pin = NC;
-
- /* ---- Serial control register (SCSCR) setting ---- */
- /* Setting the TE and RE bits enables the TxD and RxD pins to be used. */
- obj->serial.uart->SCSCR = 0x0070;
-
- is_stdio_uart = (uart == STDIO_UART) ? (1) : (0);
-
- if (is_stdio_uart) {
- stdio_uart_inited = 1;
- memcpy(&stdio_uart, obj, sizeof(serial_t));
- }
-}
-
-void serial_free(serial_t *obj) {
- uart_data[obj->serial.index].serial_irq_id = 0;
-}
-
-// serial_baud
-// set the baud rate, taking in to account the current SystemFrequency
-void serial_baud(serial_t *obj, int baudrate) {
- uint16_t DL;
-
- obj->serial.uart->SCSMR &= ~0x0003;
-
- if (baudrate > 32552) {
- obj->serial.uart->SCEMR = 0x0081; // BGDM = 1, ABCS = 1
- DL = PCLK / (8 * baudrate);
- if (DL > 0) {
- DL--;
- }
- obj->serial.uart->SCBRR = (uint8_t)DL;
- } else if (baudrate > 16276) {
- obj->serial.uart->SCEMR = 0x0080; // BGDM = 1
- obj->serial.uart->SCBRR = PCLK / (16 * baudrate) - 1;
- } else if (baudrate > 8138) {
- obj->serial.uart->SCEMR = 0x0000;
- obj->serial.uart->SCBRR = PCLK / (32 * baudrate) - 1;
- } else if (baudrate > 4169) {
- obj->serial.uart->SCSMR |= 0x0001;
- obj->serial.uart->SCEMR = 0x0080; // BGDM = 1
- obj->serial.uart->SCBRR = PCLK / (64 * baudrate) - 1;
- } else if (baudrate > 2034) {
- obj->serial.uart->SCSMR |= 0x0001;
- obj->serial.uart->SCEMR = 0x0000;
- obj->serial.uart->SCBRR = PCLK / (128 * baudrate) - 1;
- } else if (baudrate > 1017) {
- obj->serial.uart->SCSMR |= 0x0002;
- obj->serial.uart->SCEMR = 0x0080; // BGDM = 1
- obj->serial.uart->SCBRR = PCLK / (256 * baudrate) - 1;
- } else if (baudrate > 508) {
- obj->serial.uart->SCSMR |= 0x0002;
- obj->serial.uart->SCEMR = 0x0000;
- obj->serial.uart->SCBRR = PCLK / (512 * baudrate) - 1;
- } else if (baudrate > 254) {
- obj->serial.uart->SCSMR |= 0x0003;
- obj->serial.uart->SCEMR = 0x0080; // BGDM = 1
- obj->serial.uart->SCBRR = PCLK / (1024 * baudrate) - 1;
- } else if (baudrate > 127) {
- obj->serial.uart->SCSMR |= 0x0003;
- obj->serial.uart->SCEMR = 0x0000;
- obj->serial.uart->SCBRR = PCLK / (2048 * baudrate) - 1;
- } else {
- obj->serial.uart->SCSMR |= 0x0003;
- obj->serial.uart->SCEMR = 0x0000;
- obj->serial.uart->SCBRR = 0xFFu;
- }
-}
-
-void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) {
- int parity_enable;
- int parity_select;
-
- MBED_ASSERT((stop_bits == 1) || (stop_bits == 2)); // 0: 1 stop bits, 1: 2 stop bits
- MBED_ASSERT((data_bits > 4) && (data_bits < 9)); // 5: 5 data bits ... 3: 8 data bits
- MBED_ASSERT((parity == ParityNone) || (parity == ParityOdd) || (parity == ParityEven) ||
- (parity == ParityForced1) || (parity == ParityForced0));
-
- stop_bits = (stop_bits == 1)? 0:
- (stop_bits == 2)? 1:
- 0; // must not to be
-
- data_bits = (data_bits == 8)? 0:
- (data_bits == 7)? 1:
- 0; // must not to be
-
- switch (parity) {
- case ParityNone:
- parity_enable = 0;
- parity_select = 0;
- break;
- case ParityOdd:
- parity_enable = 1;
- parity_select = 1;
- break;
- case ParityEven:
- parity_enable = 1;
- parity_select = 0;
- break;
- case ParityForced1:
- case ParityForced0:
- default:
- parity_enable = 0;
- parity_select = 0;
- break;
- }
-
- obj->serial.uart->SCSMR = data_bits << 6
- | parity_enable << 5
- | parity_select << 4
- | stop_bits << 3;
-}
-
-/******************************************************************************
- * INTERRUPTS HANDLING
- ******************************************************************************/
-
-static void uart_tx_irq(IRQn_Type irq_num, uint32_t index) {
- __IO uint16_t *dmy_rd_scscr;
- __IO uint16_t *dmy_rd_scfsr;
- serial_t *obj;
- int i;
-
- dmy_rd_scscr = SCSCR_MATCH[index];
- *dmy_rd_scscr &= 0x007B; // Clear TIE and Write to bit15~8,2 is always 0
- dmy_rd_scfsr = SCFSR_MATCH[index];
- *dmy_rd_scfsr = (*dmy_rd_scfsr & ~0x0020); // Set TEND
-
- obj = uart_data[index].tranferring_obj;
- if (obj) {
- i = obj->tx_buff.length - obj->tx_buff.pos;
- if (0 < i) {
- if (serial_available_buffer(obj) < i) {
- i = serial_available_buffer(obj);
- }
- do {
- uint8_t c = *(uint8_t *)obj->tx_buff.buffer;
- obj->tx_buff.buffer = (uint8_t *)obj->tx_buff.buffer + 1;
- ++obj->tx_buff.pos;
- obj->serial.uart->SCFTDR = c;
- } while (--i);
- serial_put_done(obj);
- } else {
- uart_data[index].tranferring_obj = NULL;
- uart_data[index].event = SERIAL_EVENT_TX_COMPLETE;
- ((void (*)())uart_data[index].async_tx_callback)();
- }
- }
-
- irq_handler(uart_data[index].serial_irq_id, TxIrq);
-}
-
-static void uart_rx_irq(IRQn_Type irq_num, uint32_t index) {
- __IO uint16_t *dmy_rd_scscr;
- __IO uint16_t *dmy_rd_scfsr;
- serial_t *obj;
- int c;
-
- dmy_rd_scscr = SCSCR_MATCH[index];
- *dmy_rd_scscr &= 0x00B3; // Clear RIE,REIE and Write to bit15~8,2 is always 0
- dmy_rd_scfsr = SCFSR_MATCH[index];
- *dmy_rd_scfsr = (*dmy_rd_scfsr & ~0x0003); // Clear RDF,DR
-
- obj = uart_data[index].receiving_obj;
- if (obj) {
- if (obj->serial.uart->SCLSR & 1) {
- if (uart_data[index].wanted_rx_events & SERIAL_EVENT_RX_OVERRUN_ERROR) {
- serial_rx_abort_asynch(obj);
- uart_data[index].event = SERIAL_EVENT_RX_OVERRUN_ERROR;
- ((void (*)())uart_data[index].async_rx_callback)();
- }
- return;
- }
- c = serial_getc(obj);
- if (c != -1) {
- ((uint8_t *)obj->rx_buff.buffer)[obj->rx_buff.pos] = c;
- ++obj->rx_buff.pos;
- if (c == obj->char_match && ! obj->char_found) {
- obj->char_found = 1;
- if (obj->rx_buff.pos == obj->rx_buff.length) {
- if (uart_data[index].wanted_rx_events & SERIAL_EVENT_RX_COMPLETE) {
- uart_data[index].event = SERIAL_EVENT_RX_COMPLETE;
- }
- }
- if (uart_data[index].wanted_rx_events & SERIAL_EVENT_RX_CHARACTER_MATCH) {
- uart_data[index].event |= SERIAL_EVENT_RX_CHARACTER_MATCH;
- }
- if (uart_data[index].event) {
- uart_data[index].receiving_obj = NULL;
- ((void (*)())uart_data[index].async_rx_callback)();
- }
- } else if (obj->rx_buff.pos == obj->rx_buff.length) {
- uart_data[index].receiving_obj = NULL;
- if (uart_data[index].wanted_rx_events & SERIAL_EVENT_RX_COMPLETE) {
- uart_data[index].event = SERIAL_EVENT_RX_COMPLETE;
- ((void (*)())uart_data[index].async_rx_callback)();
- }
- }
- } else {
- serial_rx_abort_asynch(obj);
- if (uart_data[index].wanted_rx_events & (SERIAL_EVENT_RX_PARITY_ERROR | SERIAL_EVENT_RX_FRAMING_ERROR)) {
- uart_data[index].event = SERIAL_EVENT_RX_PARITY_ERROR | SERIAL_EVENT_RX_FRAMING_ERROR;
- if (obj->serial.uart->SCFSR & 1 << 2) {
- uart_data[index].event = SERIAL_EVENT_RX_PARITY_ERROR;
- } else if (obj->serial.uart->SCFSR & 1 << 3) {
- uart_data[index].event = SERIAL_EVENT_RX_FRAMING_ERROR;
- }
- ((void (*)())uart_data[index].async_rx_callback)();
- }
- return;
- }
- }
-
- irq_handler(uart_data[index].serial_irq_id, RxIrq);
-}
-
-static void uart_err_irq(IRQn_Type irq_num, uint32_t index) {
- serial_t *obj = uart_data[index].receiving_obj;
- int was_masked, err_read;
-
- if (obj) {
- serial_irq_err_set(obj, 0);
- if (uart_data[index].wanted_rx_events & (SERIAL_EVENT_RX_PARITY_ERROR | SERIAL_EVENT_RX_FRAMING_ERROR)) {
- uart_data[index].event = SERIAL_EVENT_RX_PARITY_ERROR | SERIAL_EVENT_RX_FRAMING_ERROR;
- if (obj->serial.uart->SCFSR & 1 << 2) {
- uart_data[index].event = SERIAL_EVENT_RX_PARITY_ERROR;
- } else if (obj->serial.uart->SCFSR & 1 << 3) {
- uart_data[index].event = SERIAL_EVENT_RX_FRAMING_ERROR;
- }
- ((void (*)())uart_data[index].async_rx_callback)();
- }
- serial_rx_abort_asynch(obj);
-
-#if defined ( __ICCARM__ )
- was_masked = __disable_irq_iar();
-#else
- was_masked = __disable_irq();
-#endif /* __ICCARM__ */
- if (obj->serial.uart->SCFSR & 0x93) {
- err_read = obj->serial.uart->SCFSR;
- obj->serial.uart->SCFSR = (err_read & ~0x93);
- }
- if (obj->serial.uart->SCLSR & 1) {
- obj->serial.uart->SCLSR = 0;
- }
- if (!was_masked) {
- __enable_irq();
- }
- }
-}
-
-/* TX handler */
-static void uart0_tx_irq(void) {
- uart_tx_irq(SCIFTXI0_IRQn, 0);
-}
-static void uart1_tx_irq(void) {
- uart_tx_irq(SCIFTXI1_IRQn, 1);
-}
-static void uart2_tx_irq(void) {
- uart_tx_irq(SCIFTXI2_IRQn, 2);
-}
-static void uart3_tx_irq(void) {
- uart_tx_irq(SCIFTXI3_IRQn, 3);
-}
-static void uart4_tx_irq(void) {
- uart_tx_irq(SCIFTXI4_IRQn, 4);
-}
-static void uart5_tx_irq(void) {
- uart_tx_irq(SCIFTXI5_IRQn, 5);
-}
-static void uart6_tx_irq(void) {
- uart_tx_irq(SCIFTXI6_IRQn, 6);
-}
-static void uart7_tx_irq(void) {
- uart_tx_irq(SCIFTXI7_IRQn, 7);
-}
-/* RX handler */
-static void uart0_rx_irq(void) {
- uart_rx_irq(SCIFRXI0_IRQn, 0);
-}
-static void uart1_rx_irq(void) {
- uart_rx_irq(SCIFRXI1_IRQn, 1);
-}
-static void uart2_rx_irq(void) {
- uart_rx_irq(SCIFRXI2_IRQn, 2);
-}
-static void uart3_rx_irq(void) {
- uart_rx_irq(SCIFRXI3_IRQn, 3);
-}
-static void uart4_rx_irq(void) {
- uart_rx_irq(SCIFRXI4_IRQn, 4);
-}
-static void uart5_rx_irq(void) {
- uart_rx_irq(SCIFRXI5_IRQn, 5);
-}
-static void uart6_rx_irq(void) {
- uart_rx_irq(SCIFRXI6_IRQn, 6);
-}
-static void uart7_rx_irq(void) {
- uart_rx_irq(SCIFRXI7_IRQn, 7);
-}
-/* Error handler */
-static void uart0_er_irq(void)
-{
- uart_err_irq(SCIFERI0_IRQn, 0);
-}
-static void uart1_er_irq(void)
-{
- uart_err_irq(SCIFERI0_IRQn, 1);
-}
-static void uart2_er_irq(void)
-{
- uart_err_irq(SCIFERI0_IRQn, 2);
-}
-static void uart3_er_irq(void)
-{
- uart_err_irq(SCIFERI0_IRQn, 3);
-}
-static void uart4_er_irq(void)
-{
- uart_err_irq(SCIFERI0_IRQn, 4);
-}
-static void uart5_er_irq(void)
-{
- uart_err_irq(SCIFERI0_IRQn, 5);
-}
-static void uart6_er_irq(void)
-{
- uart_err_irq(SCIFERI0_IRQn, 6);
-}
-static void uart7_er_irq(void)
-{
- uart_err_irq(SCIFERI0_IRQn, 7);
-}
-
-void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) {
- irq_handler = handler;
- uart_data[obj->serial.index].serial_irq_id = id;
-}
-
-static void serial_irq_set_irq(IRQn_Type IRQn, IRQHandler handler, uint32_t enable)
-{
- if (enable) {
- InterruptHandlerRegister(IRQn, (void (*)(uint32_t))handler);
- GIC_SetPriority(IRQn, 5);
- GIC_EnableIRQ(IRQn);
- } else {
- GIC_DisableIRQ(IRQn);
- }
-}
-
-static void serial_irq_set_internal(serial_t *obj, SerialIrq irq, uint32_t enable) {
- IRQn_Type IRQn;
- IRQHandler handler;
-
- IRQn = irq_set_tbl[obj->serial.index][irq];
- handler = hander_set_tbl[obj->serial.index][irq];
-
- if ((obj->serial.index >= 0) && (obj->serial.index <= 7)) {
- serial_irq_set_irq(IRQn, handler, enable);
- }
-}
-
-static void serial_irq_err_set(serial_t *obj, uint32_t enable)
-{
- serial_irq_set_irq(irq_set_tbl[obj->serial.index][2], hander_set_tbl[obj->serial.index][2], enable);
- serial_irq_set_irq(irq_set_tbl[obj->serial.index][3], hander_set_tbl[obj->serial.index][3], enable);
-}
-
-void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) {
- if (RxIrq == irq) {
- uart_data[obj->serial.index].rx_irq_set_api = enable;
- }
- serial_irq_set_internal(obj, irq, enable);
-}
-
-static void serial_flow_irq_set(serial_t *obj, uint32_t enable) {
- uart_data[obj->serial.index].rx_irq_set_flow = enable;
- serial_irq_set_internal(obj, RxIrq, enable);
-}
-
-/******************************************************************************
- * READ/WRITE
- ******************************************************************************/
-int serial_getc(serial_t *obj) {
- uint16_t err_read;
- int data;
- int was_masked;
-
-#if defined ( __ICCARM__ )
- was_masked = __disable_irq_iar();
-#else
- was_masked = __disable_irq();
-#endif /* __ICCARM__ */
- if (obj->serial.uart->SCFSR & 0x93) {
- err_read = obj->serial.uart->SCFSR;
- obj->serial.uart->SCFSR = (err_read & ~0x93);
- }
- obj->serial.uart->SCSCR |= 0x0040; // Set RIE
- if (!was_masked) {
- __enable_irq();
- }
-
- if (obj->serial.uart->SCLSR & 0x0001) {
- obj->serial.uart->SCLSR = 0u; // ORER clear
- }
-
- while (!serial_readable(obj));
- data = obj->serial.uart->SCFRDR & 0xff;
-
-#if defined ( __ICCARM__ )
- was_masked = __disable_irq_iar();
-#else
- was_masked = __disable_irq();
-#endif /* __ICCARM__ */
- err_read = obj->serial.uart->SCFSR;
- obj->serial.uart->SCFSR = (err_read & 0xfffD); // Clear RDF
- if (!was_masked) {
- __enable_irq();
- }
-
- if (err_read & 0x80) {
- data = -1; //err
- }
- return data;
-}
-
-void serial_putc(serial_t *obj, int c) {
- while (!serial_writable(obj));
- obj->serial.uart->SCFTDR = c;
- serial_put_done(obj);
-}
-
-static void serial_put_done(serial_t *obj)
-{
- int was_masked;
- volatile uint16_t dummy_read;
-
-#if defined ( __ICCARM__ )
- was_masked = __disable_irq_iar();
-#else
- was_masked = __disable_irq();
-#endif /* __ICCARM__ */
- dummy_read = obj->serial.uart->SCFSR;
- obj->serial.uart->SCFSR = (dummy_read & 0xff9f); // Clear TEND/TDFE
- obj->serial.uart->SCSCR |= 0x0080; // Set TIE
- if (!was_masked) {
- __enable_irq();
- }
-}
-
-int serial_readable(serial_t *obj) {
- return ((obj->serial.uart->SCFSR & 0x02) != 0); // RDF
-}
-
-int serial_writable(serial_t *obj) {
- return ((obj->serial.uart->SCFSR & 0x20) != 0); // TDFE
-}
-
-void serial_clear(serial_t *obj) {
- int was_masked;
-#if defined ( __ICCARM__ )
- was_masked = __disable_irq_iar();
-#else
- was_masked = __disable_irq();
-#endif /* __ICCARM__ */
-
- obj->serial.uart->SCFCR |= 0x06; // TFRST = 1, RFRST = 1
- obj->serial.uart->SCFCR &= ~0x06; // TFRST = 0, RFRST = 0
- obj->serial.uart->SCFSR &= ~0x0093u; // ER, BRK, RDF, DR = 0
-
- if (!was_masked) {
- __enable_irq();
- }
-}
-
-void serial_pinout_tx(PinName tx) {
- pinmap_pinout(tx, PinMap_UART_TX);
-}
-
-void serial_break_set(serial_t *obj) {
- int was_masked;
-#if defined ( __ICCARM__ )
- was_masked = __disable_irq_iar();
-#else
- was_masked = __disable_irq();
-#endif /* __ICCARM__ */
- // TxD Output(L)
- obj->serial.uart->SCSPTR &= ~0x0001u; // SPB2DT = 0
- obj->serial.uart->SCSCR &= ~0x0020u; // TE = 0 (Output disable)
- if (!was_masked) {
- __enable_irq();
- }
-}
-
-void serial_break_clear(serial_t *obj) {
- int was_masked;
-#if defined ( __ICCARM__ )
- was_masked = __disable_irq_iar();
-#else
- was_masked = __disable_irq();
-#endif /* __ICCARM__ */
- obj->serial.uart->SCSCR |= 0x0020u; // TE = 1 (Output enable)
- obj->serial.uart->SCSPTR |= 0x0001u; // SPB2DT = 1
- if (!was_masked) {
- __enable_irq();
- }
-}
-
-void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow) {
- // determine the UART to use
- int was_masked;
-
- serial_flow_irq_set(obj, 0);
-
- if (type == FlowControlRTSCTS) {
-#if defined ( __ICCARM__ )
- was_masked = __disable_irq_iar();
-#else
- was_masked = __disable_irq();
-#endif /* __ICCARM__ */
- obj->serial.uart->SCFCR = 0x0008u; // CTS/RTS enable
- if (!was_masked) {
- __enable_irq();
- }
- pinmap_pinout(rxflow, PinMap_UART_RTS);
- pinmap_pinout(txflow, PinMap_UART_CTS);
- } else {
-#if defined ( __ICCARM__ )
- was_masked = __disable_irq_iar();
-#else
- was_masked = __disable_irq();
-#endif /* __ICCARM__ */
- obj->serial.uart->SCFCR = 0x0000u; // CTS/RTS diable
- if (!was_masked) {
- __enable_irq();
- }
- }
-}
-
-static uint8_t serial_available_buffer(serial_t *obj)
-{
- return 1;
- /* Faster but unstable way */
- /*
- uint16_t ret = 16 - ((obj->serial.uart->SCFDR >> 8) & 0x1F);
- while (ret == 0) {
- ret = 16 - ((obj->serial.uart->SCFDR >> 8) & 0x1F);
- }
- MBED_ASSERT(0 < ret && ret <= 16);
- return ret;
- */
-}
-
-#if DEVICE_SERIAL_ASYNCH
-
-/******************************************************************************
- * ASYNCHRONOUS HAL
- ******************************************************************************/
-
-int serial_tx_asynch(serial_t *obj, const void *tx, size_t tx_length, uint8_t tx_width, uint32_t handler, uint32_t event, DMAUsage hint)
-{
- int i;
- buffer_t *buf = &obj->tx_buff;
- struct serial_global_data_s *data = uart_data + obj->serial.index;
-
- if (tx_length == 0) {
- return 0;
- }
-
- buf->buffer = (void *)tx;
- buf->length = tx_length * tx_width / 8;
- buf->pos = 0;
- buf->width = tx_width;
- data->tranferring_obj = obj;
- data->async_tx_callback = handler;
- serial_irq_set(obj, TxIrq, 1);
-
- while (!serial_writable(obj));
- i = buf->length;
- if (serial_available_buffer(obj) < i) {
- i = serial_available_buffer(obj);
- }
- do {
- uint8_t c = *(uint8_t *)buf->buffer;
- obj->tx_buff.buffer = (uint8_t *)obj->tx_buff.buffer + 1;
- ++buf->pos;
- obj->serial.uart->SCFTDR = c;
- } while (--i);
- serial_put_done(obj);
-
- return buf->length;
-}
-
-void serial_rx_asynch(serial_t *obj, void *rx, size_t rx_length, uint8_t rx_width, uint32_t handler, uint32_t event, uint8_t char_match, DMAUsage hint)
-{
- buffer_t *buf = &obj->rx_buff;
- struct serial_global_data_s *data = uart_data + obj->serial.index;
-
- if (rx_length == 0) {
- return;
- }
-
- buf->buffer = rx;
- buf->length = rx_length * rx_width / 8;
- buf->pos = 0;
- buf->width = rx_width;
- obj->char_match = char_match;
- obj->char_found = 0;
- data->receiving_obj = obj;
- data->async_rx_callback = handler;
- data->event = 0;
- data->wanted_rx_events = event;
-
- serial_irq_set(obj, RxIrq, 1);
- serial_irq_err_set(obj, 1);
-}
-
-uint8_t serial_tx_active(serial_t *obj)
-{
- return uart_data[obj->serial.index].tranferring_obj != NULL;
-}
-
-uint8_t serial_rx_active(serial_t *obj)
-{
- return uart_data[obj->serial.index].receiving_obj != NULL;
-}
-
-int serial_irq_handler_asynch(serial_t *obj)
-{
- return uart_data[obj->serial.index].event;
-}
-
-void serial_tx_abort_asynch(serial_t *obj)
-{
- uart_data[obj->serial.index].tranferring_obj = NULL;
- obj->serial.uart->SCFCR |= 1 << 2;
- obj->serial.uart->SCFCR &= ~(1 << 2);
-}
-
-void serial_rx_abort_asynch(serial_t *obj)
-{
- uart_data[obj->serial.index].receiving_obj = NULL;
- obj->serial.uart->SCFCR |= 1 << 1;
- obj->serial.uart->SCFCR &= ~(1 << 1);
-}
-
-#endif
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2015 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// math.h required for floating point operations for baud rate calculation
+#include "mbed_assert.h"
+#include <math.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include "serial_api.h"
+#include "cmsis.h"
+#include "pinmap.h"
+#include "gpio_api.h"
+
+#include "scif_iodefine.h"
+#include "cpg_iodefine.h"
+
+/******************************************************************************
+ * INITIALIZATION
+ ******************************************************************************/
+#define PCLK (66666666) // Define the peripheral clock P1 frequency.
+
+#define UART_NUM 8
+#define IRQ_NUM 4
+
+static void uart0_tx_irq(void);
+static void uart1_tx_irq(void);
+static void uart2_tx_irq(void);
+static void uart3_tx_irq(void);
+static void uart4_tx_irq(void);
+static void uart5_tx_irq(void);
+static void uart6_tx_irq(void);
+static void uart7_tx_irq(void);
+static void uart0_rx_irq(void);
+static void uart1_rx_irq(void);
+static void uart2_rx_irq(void);
+static void uart3_rx_irq(void);
+static void uart4_rx_irq(void);
+static void uart5_rx_irq(void);
+static void uart6_rx_irq(void);
+static void uart7_rx_irq(void);
+static void uart0_er_irq(void);
+static void uart1_er_irq(void);
+static void uart2_er_irq(void);
+static void uart3_er_irq(void);
+static void uart4_er_irq(void);
+static void uart5_er_irq(void);
+static void uart6_er_irq(void);
+static void uart7_er_irq(void);
+
+static void serial_put_done(serial_t *obj);
+static uint8_t serial_available_buffer(serial_t *obj);
+static void serial_irq_err_set(serial_t *obj, uint32_t enable);
+
+static const PinMap PinMap_UART_TX[] = {
+ {P2_14 , UART0, 6},
+ {P2_5 , UART1, 6},
+ {P4_12 , UART1, 7},
+ {P6_3 , UART2, 7},
+ {P4_14 , UART2, 7},
+ {P5_3 , UART3, 5},
+ {P8_8 , UART3, 7},
+ {P5_0 , UART4, 5},
+ {P8_14 , UART4, 7},
+ {P8_13 , UART5, 5},
+ {P11_10, UART5, 3},
+ {P6_6 , UART5, 5},
+ {P5_6 , UART6, 5},
+ {P11_1 , UART6, 4},
+ {P7_4 , UART7, 4},
+ {NC , NC , 0}
+};
+
+static const PinMap PinMap_UART_RX[] = {
+ {P2_15 , UART0, 6},
+ {P2_6 , UART1, 6},
+ {P4_13 , UART1, 7},
+ {P6_2 , UART2, 7},
+ {P4_15 , UART2, 7},
+ {P5_4 , UART3, 5},
+ {P8_9 , UART3, 7},
+ {P5_1 , UART4, 5},
+ {P8_15 , UART4, 7},
+ {P8_11 , UART5, 5},
+ {P11_11, UART5, 3},
+ {P6_7 , UART5, 5},
+ {P5_7 , UART6, 5},
+ {P11_2 , UART6, 4},
+ {P7_5 , UART7, 4},
+ {NC , NC , 0}
+};
+
+static const PinMap PinMap_UART_CTS[] = {
+ {P2_3 , UART1, 6},
+ {P11_7 , UART5, 3},
+ {P7_6 , UART7, 4},
+ {NC , NC , 0}
+};
+static const PinMap PinMap_UART_RTS[] = {
+ {P2_7 , UART1, 6},
+ {P11_8 , UART5, 3},
+ {P7_7 , UART7, 4},
+ {NC , NC , 0}
+};
+
+
+
+static const struct st_scif *SCIF[] = SCIF_ADDRESS_LIST;
+static uart_irq_handler irq_handler;
+
+int stdio_uart_inited = 0;
+serial_t stdio_uart;
+
+struct serial_global_data_s {
+ uint32_t serial_irq_id;
+ gpio_t sw_rts, sw_cts;
+ uint8_t rx_irq_set_flow, rx_irq_set_api;
+ serial_t *tranferring_obj, *receiving_obj;
+ uint32_t async_tx_callback, async_rx_callback;
+ int event, wanted_rx_events;
+};
+
+static struct serial_global_data_s uart_data[UART_NUM];
+
+static const IRQn_Type irq_set_tbl[UART_NUM][IRQ_NUM] = {
+ {SCIFRXI0_IRQn, SCIFTXI0_IRQn, SCIFBRI0_IRQn, SCIFERI0_IRQn},
+ {SCIFRXI1_IRQn, SCIFTXI1_IRQn, SCIFBRI1_IRQn, SCIFERI1_IRQn},
+ {SCIFRXI2_IRQn, SCIFTXI2_IRQn, SCIFBRI2_IRQn, SCIFERI2_IRQn},
+ {SCIFRXI3_IRQn, SCIFTXI3_IRQn, SCIFBRI3_IRQn, SCIFERI3_IRQn},
+ {SCIFRXI4_IRQn, SCIFTXI4_IRQn, SCIFBRI4_IRQn, SCIFERI4_IRQn},
+ {SCIFRXI5_IRQn, SCIFTXI5_IRQn, SCIFBRI5_IRQn, SCIFERI5_IRQn},
+ {SCIFRXI6_IRQn, SCIFTXI6_IRQn, SCIFBRI6_IRQn, SCIFERI6_IRQn},
+ {SCIFRXI7_IRQn, SCIFTXI7_IRQn, SCIFBRI7_IRQn, SCIFERI7_IRQn}
+};
+
+static const IRQHandler hander_set_tbl[UART_NUM][IRQ_NUM] = {
+ {uart0_rx_irq, uart0_tx_irq, uart0_er_irq, uart0_er_irq},
+ {uart1_rx_irq, uart1_tx_irq, uart1_er_irq, uart1_er_irq},
+ {uart2_rx_irq, uart2_tx_irq, uart2_er_irq, uart2_er_irq},
+ {uart3_rx_irq, uart3_tx_irq, uart3_er_irq, uart3_er_irq},
+ {uart4_rx_irq, uart4_tx_irq, uart4_er_irq, uart4_er_irq},
+ {uart5_rx_irq, uart5_tx_irq, uart5_er_irq, uart5_er_irq},
+ {uart6_rx_irq, uart6_tx_irq, uart6_er_irq, uart6_er_irq},
+ {uart7_rx_irq, uart7_tx_irq, uart7_er_irq, uart7_er_irq}
+};
+
+static __IO uint16_t *SCSCR_MATCH[] = {
+ &SCSCR_0,
+ &SCSCR_1,
+ &SCSCR_2,
+ &SCSCR_3,
+ &SCSCR_4,
+ &SCSCR_5,
+ &SCSCR_6,
+ &SCSCR_7,
+};
+
+static __IO uint16_t *SCFSR_MATCH[] = {
+ &SCFSR_0,
+ &SCFSR_1,
+ &SCFSR_2,
+ &SCFSR_3,
+ &SCFSR_4,
+ &SCFSR_5,
+ &SCFSR_6,
+ &SCFSR_7,
+};
+
+
+void serial_init(serial_t *obj, PinName tx, PinName rx) {
+ volatile uint8_t dummy ;
+ int is_stdio_uart = 0;
+ // determine the UART to use
+ uint32_t uart_tx = pinmap_peripheral(tx, PinMap_UART_TX);
+ uint32_t uart_rx = pinmap_peripheral(rx, PinMap_UART_RX);
+ uint32_t uart = pinmap_merge(uart_tx, uart_rx);
+
+ MBED_ASSERT((int)uart != NC);
+
+ obj->serial.uart = (struct st_scif *)SCIF[uart];
+ // enable power
+ switch (uart) {
+ case UART0:
+ CPG.STBCR4 &= ~(1 << 7);
+ break;
+ case UART1:
+ CPG.STBCR4 &= ~(1 << 6);
+ break;
+ case UART2:
+ CPG.STBCR4 &= ~(1 << 5);
+ break;
+ case UART3:
+ CPG.STBCR4 &= ~(1 << 4);
+ break;
+ case UART4:
+ CPG.STBCR4 &= ~(1 << 3);
+ break;
+ case UART5:
+ CPG.STBCR4 &= ~(1 << 2);
+ break;
+ case UART6:
+ CPG.STBCR4 &= ~(1 << 1);
+ break;
+ case UART7:
+ CPG.STBCR4 &= ~(1 << 0);
+ break;
+ }
+ dummy = CPG.STBCR4;
+
+ /* ==== SCIF initial setting ==== */
+ /* ---- Serial control register (SCSCR) setting ---- */
+ /* B'00 : Internal CLK */
+ obj->serial.uart->SCSCR = 0x0000u; /* SCIF transmitting and receiving operations stop */
+
+ /* ---- FIFO control register (SCFCR) setting ---- */
+ /* Transmit FIFO reset & Receive FIFO data register reset */
+ obj->serial.uart->SCFCR = 0x0006;
+
+ /* ---- Serial status register (SCFSR) setting ---- */
+ dummy = obj->serial.uart->SCFSR;
+ obj->serial.uart->SCFSR = (dummy & 0xFF6Cu); /* ER,BRK,DR bit clear */
+
+ /* ---- Line status register (SCLSR) setting ---- */
+ /* ORER bit clear */
+ obj->serial.uart->SCLSR = 0;
+
+ /* ---- Serial extension mode register (SCEMR) setting ----
+ b7 BGDM - Baud rate generator double-speed mode : Normal mode
+ b0 ABCS - Base clock select in asynchronous mode : Base clock is 16 times the bit rate */
+ obj->serial.uart->SCEMR = 0x0000u;
+
+ /* ---- Bit rate register (SCBRR) setting ---- */
+ serial_baud (obj, 9600);
+ serial_format(obj, 8, ParityNone, 1);
+
+ /* ---- FIFO control register (SCFCR) setting ---- */
+ obj->serial.uart->SCFCR = 0x0030u;
+
+ /* ---- Serial port register (SCSPTR) setting ----
+ b1 SPB2IO - Serial port break output : disabled
+ b0 SPB2DT - Serial port break data : High-level */
+ obj->serial.uart->SCSPTR = 0x0003u; // SPB2IO = 1, SPB2DT = 1
+
+ /* ---- Line status register (SCLSR) setting ----
+ b0 ORER - Overrun error detect : clear */
+
+ if (obj->serial.uart->SCLSR & 0x0001) {
+ obj->serial.uart->SCLSR = 0u; // ORER clear
+ }
+
+ // pinout the chosen uart
+ pinmap_pinout(tx, PinMap_UART_TX);
+ pinmap_pinout(rx, PinMap_UART_RX);
+
+ switch (uart) {
+ case UART0:
+ obj->serial.index = 0;
+ break;
+ case UART1:
+ obj->serial.index = 1;
+ break;
+ case UART2:
+ obj->serial.index = 2;
+ break;
+ case UART3:
+ obj->serial.index = 3;
+ break;
+ case UART4:
+ obj->serial.index = 4;
+ break;
+ case UART5:
+ obj->serial.index = 5;
+ break;
+ case UART6:
+ obj->serial.index = 6;
+ break;
+ case UART7:
+ obj->serial.index = 7;
+ break;
+ }
+ uart_data[obj->serial.index].sw_rts.pin = NC;
+ uart_data[obj->serial.index].sw_cts.pin = NC;
+
+ /* ---- Serial control register (SCSCR) setting ---- */
+ /* Setting the TE and RE bits enables the TxD and RxD pins to be used. */
+ obj->serial.uart->SCSCR = 0x0070;
+
+ is_stdio_uart = (uart == STDIO_UART) ? (1) : (0);
+
+ if (is_stdio_uart) {
+ stdio_uart_inited = 1;
+ memcpy(&stdio_uart, obj, sizeof(serial_t));
+ }
+}
+
+void serial_free(serial_t *obj) {
+ uart_data[obj->serial.index].serial_irq_id = 0;
+}
+
+// serial_baud
+// set the baud rate, taking in to account the current SystemFrequency
+void serial_baud(serial_t *obj, int baudrate) {
+ uint16_t DL;
+
+ obj->serial.uart->SCSMR &= ~0x0003;
+
+ if (baudrate > 32552) {
+ obj->serial.uart->SCEMR = 0x0081; // BGDM = 1, ABCS = 1
+ DL = PCLK / (8 * baudrate);
+ if (DL > 0) {
+ DL--;
+ }
+ obj->serial.uart->SCBRR = (uint8_t)DL;
+ } else if (baudrate > 16276) {
+ obj->serial.uart->SCEMR = 0x0080; // BGDM = 1
+ obj->serial.uart->SCBRR = PCLK / (16 * baudrate) - 1;
+ } else if (baudrate > 8138) {
+ obj->serial.uart->SCEMR = 0x0000;
+ obj->serial.uart->SCBRR = PCLK / (32 * baudrate) - 1;
+ } else if (baudrate > 4169) {
+ obj->serial.uart->SCSMR |= 0x0001;
+ obj->serial.uart->SCEMR = 0x0080; // BGDM = 1
+ obj->serial.uart->SCBRR = PCLK / (64 * baudrate) - 1;
+ } else if (baudrate > 2034) {
+ obj->serial.uart->SCSMR |= 0x0001;
+ obj->serial.uart->SCEMR = 0x0000;
+ obj->serial.uart->SCBRR = PCLK / (128 * baudrate) - 1;
+ } else if (baudrate > 1017) {
+ obj->serial.uart->SCSMR |= 0x0002;
+ obj->serial.uart->SCEMR = 0x0080; // BGDM = 1
+ obj->serial.uart->SCBRR = PCLK / (256 * baudrate) - 1;
+ } else if (baudrate > 508) {
+ obj->serial.uart->SCSMR |= 0x0002;
+ obj->serial.uart->SCEMR = 0x0000;
+ obj->serial.uart->SCBRR = PCLK / (512 * baudrate) - 1;
+ } else if (baudrate > 254) {
+ obj->serial.uart->SCSMR |= 0x0003;
+ obj->serial.uart->SCEMR = 0x0080; // BGDM = 1
+ obj->serial.uart->SCBRR = PCLK / (1024 * baudrate) - 1;
+ } else if (baudrate > 127) {
+ obj->serial.uart->SCSMR |= 0x0003;
+ obj->serial.uart->SCEMR = 0x0000;
+ obj->serial.uart->SCBRR = PCLK / (2048 * baudrate) - 1;
+ } else {
+ obj->serial.uart->SCSMR |= 0x0003;
+ obj->serial.uart->SCEMR = 0x0000;
+ obj->serial.uart->SCBRR = 0xFFu;
+ }
+}
+
+void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) {
+ int parity_enable;
+ int parity_select;
+
+ MBED_ASSERT((stop_bits == 1) || (stop_bits == 2)); // 0: 1 stop bits, 1: 2 stop bits
+ MBED_ASSERT((data_bits > 4) && (data_bits < 9)); // 5: 5 data bits ... 3: 8 data bits
+ MBED_ASSERT((parity == ParityNone) || (parity == ParityOdd) || (parity == ParityEven) ||
+ (parity == ParityForced1) || (parity == ParityForced0));
+
+ stop_bits = (stop_bits == 1)? 0:
+ (stop_bits == 2)? 1:
+ 0; // must not to be
+
+ data_bits = (data_bits == 8)? 0:
+ (data_bits == 7)? 1:
+ 0; // must not to be
+
+ switch (parity) {
+ case ParityNone:
+ parity_enable = 0;
+ parity_select = 0;
+ break;
+ case ParityOdd:
+ parity_enable = 1;
+ parity_select = 1;
+ break;
+ case ParityEven:
+ parity_enable = 1;
+ parity_select = 0;
+ break;
+ case ParityForced1:
+ case ParityForced0:
+ default:
+ parity_enable = 0;
+ parity_select = 0;
+ break;
+ }
+
+ obj->serial.uart->SCSMR = data_bits << 6
+ | parity_enable << 5
+ | parity_select << 4
+ | stop_bits << 3;
+}
+
+/******************************************************************************
+ * INTERRUPTS HANDLING
+ ******************************************************************************/
+
+static void uart_tx_irq(IRQn_Type irq_num, uint32_t index) {
+ __IO uint16_t *dmy_rd_scscr;
+ __IO uint16_t *dmy_rd_scfsr;
+ serial_t *obj;
+ int i;
+
+ dmy_rd_scscr = SCSCR_MATCH[index];
+ *dmy_rd_scscr &= 0x007B; // Clear TIE and Write to bit15~8,2 is always 0
+ dmy_rd_scfsr = SCFSR_MATCH[index];
+ *dmy_rd_scfsr = (*dmy_rd_scfsr & ~0x0020); // Set TEND
+
+ obj = uart_data[index].tranferring_obj;
+ if (obj) {
+ i = obj->tx_buff.length - obj->tx_buff.pos;
+ if (0 < i) {
+ if (serial_available_buffer(obj) < i) {
+ i = serial_available_buffer(obj);
+ }
+ do {
+ uint8_t c = *(uint8_t *)obj->tx_buff.buffer;
+ obj->tx_buff.buffer = (uint8_t *)obj->tx_buff.buffer + 1;
+ ++obj->tx_buff.pos;
+ obj->serial.uart->SCFTDR = c;
+ } while (--i);
+ serial_put_done(obj);
+ } else {
+ uart_data[index].tranferring_obj = NULL;
+ uart_data[index].event = SERIAL_EVENT_TX_COMPLETE;
+ ((void (*)())uart_data[index].async_tx_callback)();
+ }
+ }
+
+ irq_handler(uart_data[index].serial_irq_id, TxIrq);
+}
+
+static void uart_rx_irq(IRQn_Type irq_num, uint32_t index) {
+ __IO uint16_t *dmy_rd_scscr;
+ __IO uint16_t *dmy_rd_scfsr;
+ serial_t *obj;
+ int c;
+
+ dmy_rd_scscr = SCSCR_MATCH[index];
+ *dmy_rd_scscr &= 0x00B3; // Clear RIE,REIE and Write to bit15~8,2 is always 0
+ dmy_rd_scfsr = SCFSR_MATCH[index];
+ *dmy_rd_scfsr = (*dmy_rd_scfsr & ~0x0003); // Clear RDF,DR
+
+ obj = uart_data[index].receiving_obj;
+ if (obj) {
+ if (obj->serial.uart->SCLSR & 1) {
+ if (uart_data[index].wanted_rx_events & SERIAL_EVENT_RX_OVERRUN_ERROR) {
+ serial_rx_abort_asynch(obj);
+ uart_data[index].event = SERIAL_EVENT_RX_OVERRUN_ERROR;
+ ((void (*)())uart_data[index].async_rx_callback)();
+ }
+ return;
+ }
+ c = serial_getc(obj);
+ if (c != -1) {
+ ((uint8_t *)obj->rx_buff.buffer)[obj->rx_buff.pos] = c;
+ ++obj->rx_buff.pos;
+ if (c == obj->char_match && ! obj->char_found) {
+ obj->char_found = 1;
+ if (obj->rx_buff.pos == obj->rx_buff.length) {
+ if (uart_data[index].wanted_rx_events & SERIAL_EVENT_RX_COMPLETE) {
+ uart_data[index].event = SERIAL_EVENT_RX_COMPLETE;
+ }
+ }
+ if (uart_data[index].wanted_rx_events & SERIAL_EVENT_RX_CHARACTER_MATCH) {
+ uart_data[index].event |= SERIAL_EVENT_RX_CHARACTER_MATCH;
+ }
+ if (uart_data[index].event) {
+ uart_data[index].receiving_obj = NULL;
+ ((void (*)())uart_data[index].async_rx_callback)();
+ }
+ } else if (obj->rx_buff.pos == obj->rx_buff.length) {
+ uart_data[index].receiving_obj = NULL;
+ if (uart_data[index].wanted_rx_events & SERIAL_EVENT_RX_COMPLETE) {
+ uart_data[index].event = SERIAL_EVENT_RX_COMPLETE;
+ ((void (*)())uart_data[index].async_rx_callback)();
+ }
+ }
+ } else {
+ serial_rx_abort_asynch(obj);
+ if (uart_data[index].wanted_rx_events & (SERIAL_EVENT_RX_PARITY_ERROR | SERIAL_EVENT_RX_FRAMING_ERROR)) {
+ uart_data[index].event = SERIAL_EVENT_RX_PARITY_ERROR | SERIAL_EVENT_RX_FRAMING_ERROR;
+ if (obj->serial.uart->SCFSR & 1 << 2) {
+ uart_data[index].event = SERIAL_EVENT_RX_PARITY_ERROR;
+ } else if (obj->serial.uart->SCFSR & 1 << 3) {
+ uart_data[index].event = SERIAL_EVENT_RX_FRAMING_ERROR;
+ }
+ ((void (*)())uart_data[index].async_rx_callback)();
+ }
+ return;
+ }
+ }
+
+ irq_handler(uart_data[index].serial_irq_id, RxIrq);
+}
+
+static void uart_err_irq(IRQn_Type irq_num, uint32_t index) {
+ serial_t *obj = uart_data[index].receiving_obj;
+ int was_masked, err_read;
+
+ if (obj) {
+ serial_irq_err_set(obj, 0);
+ if (uart_data[index].wanted_rx_events & (SERIAL_EVENT_RX_PARITY_ERROR | SERIAL_EVENT_RX_FRAMING_ERROR)) {
+ uart_data[index].event = SERIAL_EVENT_RX_PARITY_ERROR | SERIAL_EVENT_RX_FRAMING_ERROR;
+ if (obj->serial.uart->SCFSR & 1 << 2) {
+ uart_data[index].event = SERIAL_EVENT_RX_PARITY_ERROR;
+ } else if (obj->serial.uart->SCFSR & 1 << 3) {
+ uart_data[index].event = SERIAL_EVENT_RX_FRAMING_ERROR;
+ }
+ ((void (*)())uart_data[index].async_rx_callback)();
+ }
+ serial_rx_abort_asynch(obj);
+
+#if defined ( __ICCARM__ )
+ was_masked = __disable_irq_iar();
+#else
+ was_masked = __disable_irq();
+#endif /* __ICCARM__ */
+ if (obj->serial.uart->SCFSR & 0x93) {
+ err_read = obj->serial.uart->SCFSR;
+ obj->serial.uart->SCFSR = (err_read & ~0x93);
+ }
+ if (obj->serial.uart->SCLSR & 1) {
+ obj->serial.uart->SCLSR = 0;
+ }
+ if (!was_masked) {
+ __enable_irq();
+ }
+ }
+}
+
+/* TX handler */
+static void uart0_tx_irq(void) {
+ uart_tx_irq(SCIFTXI0_IRQn, 0);
+}
+static void uart1_tx_irq(void) {
+ uart_tx_irq(SCIFTXI1_IRQn, 1);
+}
+static void uart2_tx_irq(void) {
+ uart_tx_irq(SCIFTXI2_IRQn, 2);
+}
+static void uart3_tx_irq(void) {
+ uart_tx_irq(SCIFTXI3_IRQn, 3);
+}
+static void uart4_tx_irq(void) {
+ uart_tx_irq(SCIFTXI4_IRQn, 4);
+}
+static void uart5_tx_irq(void) {
+ uart_tx_irq(SCIFTXI5_IRQn, 5);
+}
+static void uart6_tx_irq(void) {
+ uart_tx_irq(SCIFTXI6_IRQn, 6);
+}
+static void uart7_tx_irq(void) {
+ uart_tx_irq(SCIFTXI7_IRQn, 7);
+}
+/* RX handler */
+static void uart0_rx_irq(void) {
+ uart_rx_irq(SCIFRXI0_IRQn, 0);
+}
+static void uart1_rx_irq(void) {
+ uart_rx_irq(SCIFRXI1_IRQn, 1);
+}
+static void uart2_rx_irq(void) {
+ uart_rx_irq(SCIFRXI2_IRQn, 2);
+}
+static void uart3_rx_irq(void) {
+ uart_rx_irq(SCIFRXI3_IRQn, 3);
+}
+static void uart4_rx_irq(void) {
+ uart_rx_irq(SCIFRXI4_IRQn, 4);
+}
+static void uart5_rx_irq(void) {
+ uart_rx_irq(SCIFRXI5_IRQn, 5);
+}
+static void uart6_rx_irq(void) {
+ uart_rx_irq(SCIFRXI6_IRQn, 6);
+}
+static void uart7_rx_irq(void) {
+ uart_rx_irq(SCIFRXI7_IRQn, 7);
+}
+/* Error handler */
+static void uart0_er_irq(void)
+{
+ uart_err_irq(SCIFERI0_IRQn, 0);
+}
+static void uart1_er_irq(void)
+{
+ uart_err_irq(SCIFERI0_IRQn, 1);
+}
+static void uart2_er_irq(void)
+{
+ uart_err_irq(SCIFERI0_IRQn, 2);
+}
+static void uart3_er_irq(void)
+{
+ uart_err_irq(SCIFERI0_IRQn, 3);
+}
+static void uart4_er_irq(void)
+{
+ uart_err_irq(SCIFERI0_IRQn, 4);
+}
+static void uart5_er_irq(void)
+{
+ uart_err_irq(SCIFERI0_IRQn, 5);
+}
+static void uart6_er_irq(void)
+{
+ uart_err_irq(SCIFERI0_IRQn, 6);
+}
+static void uart7_er_irq(void)
+{
+ uart_err_irq(SCIFERI0_IRQn, 7);
+}
+
+void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) {
+ irq_handler = handler;
+ uart_data[obj->serial.index].serial_irq_id = id;
+}
+
+static void serial_irq_set_irq(IRQn_Type IRQn, IRQHandler handler, uint32_t enable)
+{
+ if (enable) {
+ InterruptHandlerRegister(IRQn, (void (*)(uint32_t))handler);
+ GIC_SetPriority(IRQn, 5);
+ GIC_EnableIRQ(IRQn);
+ } else {
+ GIC_DisableIRQ(IRQn);
+ }
+}
+
+static void serial_irq_set_internal(serial_t *obj, SerialIrq irq, uint32_t enable) {
+ IRQn_Type IRQn;
+ IRQHandler handler;
+
+ IRQn = irq_set_tbl[obj->serial.index][irq];
+ handler = hander_set_tbl[obj->serial.index][irq];
+
+ if ((obj->serial.index >= 0) && (obj->serial.index <= 7)) {
+ serial_irq_set_irq(IRQn, handler, enable);
+ }
+}
+
+static void serial_irq_err_set(serial_t *obj, uint32_t enable)
+{
+ serial_irq_set_irq(irq_set_tbl[obj->serial.index][2], hander_set_tbl[obj->serial.index][2], enable);
+ serial_irq_set_irq(irq_set_tbl[obj->serial.index][3], hander_set_tbl[obj->serial.index][3], enable);
+}
+
+void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) {
+ if (RxIrq == irq) {
+ uart_data[obj->serial.index].rx_irq_set_api = enable;
+ }
+ serial_irq_set_internal(obj, irq, enable);
+}
+
+static void serial_flow_irq_set(serial_t *obj, uint32_t enable) {
+ uart_data[obj->serial.index].rx_irq_set_flow = enable;
+ serial_irq_set_internal(obj, RxIrq, enable);
+}
+
+/******************************************************************************
+ * READ/WRITE
+ ******************************************************************************/
+int serial_getc(serial_t *obj) {
+ uint16_t err_read;
+ int data;
+ int was_masked;
+
+#if defined ( __ICCARM__ )
+ was_masked = __disable_irq_iar();
+#else
+ was_masked = __disable_irq();
+#endif /* __ICCARM__ */
+ if (obj->serial.uart->SCFSR & 0x93) {
+ err_read = obj->serial.uart->SCFSR;
+ obj->serial.uart->SCFSR = (err_read & ~0x93);
+ }
+ obj->serial.uart->SCSCR |= 0x0040; // Set RIE
+ if (!was_masked) {
+ __enable_irq();
+ }
+
+ if (obj->serial.uart->SCLSR & 0x0001) {
+ obj->serial.uart->SCLSR = 0u; // ORER clear
+ }
+
+ while (!serial_readable(obj));
+ data = obj->serial.uart->SCFRDR & 0xff;
+
+#if defined ( __ICCARM__ )
+ was_masked = __disable_irq_iar();
+#else
+ was_masked = __disable_irq();
+#endif /* __ICCARM__ */
+ err_read = obj->serial.uart->SCFSR;
+ obj->serial.uart->SCFSR = (err_read & 0xfffD); // Clear RDF
+ if (!was_masked) {
+ __enable_irq();
+ }
+
+ if (err_read & 0x80) {
+ data = -1; //err
+ }
+ return data;
+}
+
+void serial_putc(serial_t *obj, int c) {
+ while (!serial_writable(obj));
+ obj->serial.uart->SCFTDR = c;
+ serial_put_done(obj);
+}
+
+static void serial_put_done(serial_t *obj)
+{
+ int was_masked;
+ volatile uint16_t dummy_read;
+
+#if defined ( __ICCARM__ )
+ was_masked = __disable_irq_iar();
+#else
+ was_masked = __disable_irq();
+#endif /* __ICCARM__ */
+ dummy_read = obj->serial.uart->SCFSR;
+ obj->serial.uart->SCFSR = (dummy_read & 0xff9f); // Clear TEND/TDFE
+ obj->serial.uart->SCSCR |= 0x0080; // Set TIE
+ if (!was_masked) {
+ __enable_irq();
+ }
+}
+
+int serial_readable(serial_t *obj) {
+ return ((obj->serial.uart->SCFSR & 0x02) != 0); // RDF
+}
+
+int serial_writable(serial_t *obj) {
+ return ((obj->serial.uart->SCFSR & 0x20) != 0); // TDFE
+}
+
+void serial_clear(serial_t *obj) {
+ int was_masked;
+#if defined ( __ICCARM__ )
+ was_masked = __disable_irq_iar();
+#else
+ was_masked = __disable_irq();
+#endif /* __ICCARM__ */
+
+ obj->serial.uart->SCFCR |= 0x06; // TFRST = 1, RFRST = 1
+ obj->serial.uart->SCFCR &= ~0x06; // TFRST = 0, RFRST = 0
+ obj->serial.uart->SCFSR &= ~0x0093u; // ER, BRK, RDF, DR = 0
+
+ if (!was_masked) {
+ __enable_irq();
+ }
+}
+
+void serial_pinout_tx(PinName tx) {
+ pinmap_pinout(tx, PinMap_UART_TX);
+}
+
+void serial_break_set(serial_t *obj) {
+ int was_masked;
+#if defined ( __ICCARM__ )
+ was_masked = __disable_irq_iar();
+#else
+ was_masked = __disable_irq();
+#endif /* __ICCARM__ */
+ // TxD Output(L)
+ obj->serial.uart->SCSPTR &= ~0x0001u; // SPB2DT = 0
+ obj->serial.uart->SCSCR &= ~0x0020u; // TE = 0 (Output disable)
+ if (!was_masked) {
+ __enable_irq();
+ }
+}
+
+void serial_break_clear(serial_t *obj) {
+ int was_masked;
+#if defined ( __ICCARM__ )
+ was_masked = __disable_irq_iar();
+#else
+ was_masked = __disable_irq();
+#endif /* __ICCARM__ */
+ obj->serial.uart->SCSCR |= 0x0020u; // TE = 1 (Output enable)
+ obj->serial.uart->SCSPTR |= 0x0001u; // SPB2DT = 1
+ if (!was_masked) {
+ __enable_irq();
+ }
+}
+
+void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow) {
+ // determine the UART to use
+ int was_masked;
+
+ serial_flow_irq_set(obj, 0);
+
+ if (type == FlowControlRTSCTS) {
+#if defined ( __ICCARM__ )
+ was_masked = __disable_irq_iar();
+#else
+ was_masked = __disable_irq();
+#endif /* __ICCARM__ */
+ obj->serial.uart->SCFCR = 0x0008u; // CTS/RTS enable
+ if (!was_masked) {
+ __enable_irq();
+ }
+ pinmap_pinout(rxflow, PinMap_UART_RTS);
+ pinmap_pinout(txflow, PinMap_UART_CTS);
+ } else {
+#if defined ( __ICCARM__ )
+ was_masked = __disable_irq_iar();
+#else
+ was_masked = __disable_irq();
+#endif /* __ICCARM__ */
+ obj->serial.uart->SCFCR = 0x0000u; // CTS/RTS diable
+ if (!was_masked) {
+ __enable_irq();
+ }
+ }
+}
+
+static uint8_t serial_available_buffer(serial_t *obj)
+{
+ return 1;
+ /* Faster but unstable way */
+ /*
+ uint16_t ret = 16 - ((obj->serial.uart->SCFDR >> 8) & 0x1F);
+ while (ret == 0) {
+ ret = 16 - ((obj->serial.uart->SCFDR >> 8) & 0x1F);
+ }
+ MBED_ASSERT(0 < ret && ret <= 16);
+ return ret;
+ */
+}
+
+#if DEVICE_SERIAL_ASYNCH
+
+/******************************************************************************
+ * ASYNCHRONOUS HAL
+ ******************************************************************************/
+
+int serial_tx_asynch(serial_t *obj, const void *tx, size_t tx_length, uint8_t tx_width, uint32_t handler, uint32_t event, DMAUsage hint)
+{
+ int i;
+ buffer_t *buf = &obj->tx_buff;
+ struct serial_global_data_s *data = uart_data + obj->serial.index;
+
+ if (tx_length == 0) {
+ return 0;
+ }
+
+ buf->buffer = (void *)tx;
+ buf->length = tx_length * tx_width / 8;
+ buf->pos = 0;
+ buf->width = tx_width;
+ data->tranferring_obj = obj;
+ data->async_tx_callback = handler;
+ serial_irq_set(obj, TxIrq, 1);
+
+ while (!serial_writable(obj));
+ i = buf->length;
+ if (serial_available_buffer(obj) < i) {
+ i = serial_available_buffer(obj);
+ }
+ do {
+ uint8_t c = *(uint8_t *)buf->buffer;
+ obj->tx_buff.buffer = (uint8_t *)obj->tx_buff.buffer + 1;
+ ++buf->pos;
+ obj->serial.uart->SCFTDR = c;
+ } while (--i);
+ serial_put_done(obj);
+
+ return buf->length;
+}
+
+void serial_rx_asynch(serial_t *obj, void *rx, size_t rx_length, uint8_t rx_width, uint32_t handler, uint32_t event, uint8_t char_match, DMAUsage hint)
+{
+ buffer_t *buf = &obj->rx_buff;
+ struct serial_global_data_s *data = uart_data + obj->serial.index;
+
+ if (rx_length == 0) {
+ return;
+ }
+
+ buf->buffer = rx;
+ buf->length = rx_length * rx_width / 8;
+ buf->pos = 0;
+ buf->width = rx_width;
+ obj->char_match = char_match;
+ obj->char_found = 0;
+ data->receiving_obj = obj;
+ data->async_rx_callback = handler;
+ data->event = 0;
+ data->wanted_rx_events = event;
+
+ serial_irq_set(obj, RxIrq, 1);
+ serial_irq_err_set(obj, 1);
+}
+
+uint8_t serial_tx_active(serial_t *obj)
+{
+ return uart_data[obj->serial.index].tranferring_obj != NULL;
+}
+
+uint8_t serial_rx_active(serial_t *obj)
+{
+ return uart_data[obj->serial.index].receiving_obj != NULL;
+}
+
+int serial_irq_handler_asynch(serial_t *obj)
+{
+ return uart_data[obj->serial.index].event;
+}
+
+void serial_tx_abort_asynch(serial_t *obj)
+{
+ uart_data[obj->serial.index].tranferring_obj = NULL;
+ obj->serial.uart->SCFCR |= 1 << 2;
+ obj->serial.uart->SCFCR &= ~(1 << 2);
+}
+
+void serial_rx_abort_asynch(serial_t *obj)
+{
+ uart_data[obj->serial.index].receiving_obj = NULL;
+ obj->serial.uart->SCFCR |= 1 << 1;
+ obj->serial.uart->SCFCR &= ~(1 << 1);
+}
+
+#endif