Commit bcc9298e authored by Damien George's avatar Damien George
Browse files

stmhal: Add TODO's to exti.c; fix delay in lcd.c.

parent c63f9846
......@@ -66,6 +66,8 @@
// There is also a C API, so that drivers which require EXTI interrupt lines
// can also use this code. See exti.h for the available functions and
// usrsw.h for an example of using this.
//
// TODO Add python method to change callback object.
#define EXTI_OFFSET (EXTI_BASE - PERIPH_BASE)
......@@ -302,6 +304,7 @@ void Handle_EXTI_Irq(uint32_t line) {
if (line < EXTI_NUM_VECTORS) {
exti_vector_t *v = &exti_vector[line];
if (v->callback_obj != mp_const_none) {
// TODO need to wrap this in an nlr_buf; really need a general function for this
rt_call_function_1(v->callback_obj, MP_OBJ_NEW_SMALL_INT(line));
}
}
......
#include <stdio.h>
#include <string.h>
#include <stm32f4xx_hal.h>
......@@ -59,8 +60,12 @@
#define LCD_INSTR (0)
#define LCD_DATA (1)
static void lcd_delay(void) {
__asm volatile ("nop\nnop");
}
static void lcd_out(int instr_data, uint8_t i) {
HAL_Delay(0);
lcd_delay();
PYB_LCD_PORT->BSRRH = PYB_LCD_CS1_PIN; // CS=0; enable
if (instr_data == LCD_INSTR) {
PYB_LCD_PORT->BSRRH = PYB_LCD_A0_PIN; // A0=0; select instr reg
......@@ -69,7 +74,7 @@ static void lcd_out(int instr_data, uint8_t i) {
}
// send byte bigendian, latches on rising clock
for (uint32_t n = 0; n < 8; n++) {
HAL_Delay(0);
lcd_delay();
PYB_LCD_PORT->BSRRH = PYB_LCD_SCL_PIN; // SCL=0
if ((i & 0x80) == 0) {
PYB_LCD_PORT->BSRRH = PYB_LCD_SI_PIN; // SI=0
......@@ -77,7 +82,7 @@ static void lcd_out(int instr_data, uint8_t i) {
PYB_LCD_PORT->BSRRL = PYB_LCD_SI_PIN; // SI=1
}
i <<= 1;
HAL_Delay(0);
lcd_delay();
PYB_LCD_PORT->BSRRL = PYB_LCD_SCL_PIN; // SCL=1
}
PYB_LCD_PORT->BSRRL = PYB_LCD_CS1_PIN; // CS=1; disable
......
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